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单词 tetra-
释义

tetra-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.
Forms: before a vowel tetr-.
Origin: Of multiple origins. Partly a borrowing from Latin. Partly a borrowing from Greek. Etymons: Latin tetra-, Greek τετρα-.
Etymology: < classical Latin tetra- (in e.g. tetrachordon tetrachord n.) and its etymon ancient Greek τετρα-, combining form (in e.g. τετράχορδον ) of the numeral τέτταρες , τέτταρα four (see tessara- comb. form).Compare French tétra-, German tetra-.
Forming the first element of many words adapted from existing Greek compounds, and thence used in new analogous formations, mainly scientific and technical.
1. As a general etymological element.
Tetrabelodon n.
Brit. /ˌtɛtrəˈbɛlədɒn/
,
U.S. /ˌtɛtrəˈbɛləˌdɑn/
a genus of extinct elephantine beasts. [ < scientific Latin Tetrabelodon (1885 or earlier) < tetra- tetra- comb. form + ancient Greek βέλος dart (see belomancy n.) + ὀδοντ- , ὀδούς tooth (see -odon comb. form).]
ΘΚΠ
the world > animals > mammals > group Ungulata (hoofed) > order Proboscidea (elephants) > [noun] > extinct types > other types or members of
Tetracaulodon1833
dinothere1841
stegodon1857
Moeritherium1901
imperial mammoth1903
Tetrabelodon1904
imperial elephant1906
1904 Athenæum 4 Aug. 133/3 Prof. Lankester gave a curious theory of his own as to the derivation of the elephant's trunk from the soft upper jaw and nasal area of the extinct Tetrabelodon.
tetrablastic adj.
Brit. /ˌtɛtrəˈblastɪk/
,
U.S. /ˌtɛtrəˈblæstɪk/
Biology having four blastodermic membranes or germinal layers, as animals having a true cœlome or body-cavity. [ < tetra- comb. form + ancient Greek βλαστός germ (see -blast comb. form) + -ic suffix.]
ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > embryo parts > [adjective] > blastoderm, etc.
blastodermic1835
blastodermatic1849
mesoblastic1874
mesodermic1875
hypoblastic1877
mesodermal1877
involunto-motory1878
homodermic1883
mesothelial1886
epiblastic1887
triploblastic1888
tetrablastic1891
triblastic1901
1891 Cent. Dict. Tetrablastic.
tetrabolo n.
Brit. /tᵻˈtrabələʊ/
,
/tɛˈtrabələʊ/
,
U.S. /təˈtræb(ə)loʊ/
,
/tɛˈtræb(ə)loʊ/
a polyabolo composed of four triangles. [ < tetra- comb. form + -abolo (in diabolo n.), by deliberately false analogy (see quot. 1961).]
ΘΚΠ
the world > relative properties > number > geometry > shape or figure > [noun] > two-dimensional > other
amblygon1570
obliquea1608
triangulate1610
pelecoid1706
leaf1716
oblongitude1739
hexagram1863
polystigm1863
tetragram1863
tetrastigm1863
trigram1882
tetromino1954
tromino1954
tetrabolo1961
Penrose tile1975
1961 New Scientist 21 Dec. 752/3 Mr. S. J. Collins..has experimented with the various plane shapes that can be formed by edgewise joins of four isosceles right-angled triangles; for these he most ingeniously suggests the name ‘tetraboloes’. His excuse is that a ‘diabolo’ has two such triangles in its cross-section (joined pointwise, not edgewise: but no matter!).
1967 Sci. Amer. June 129/1 The pieces had been suggested to him by S. J. Collins of Bristol, England, who gave the name ‘tetraboloes’ to the order-4 set because the Diabolo, a juggling toy, has two isosceles right triangles in its cross section. This implies the generic name ‘polyaboloes’.
Categories »
tetrabrach n.
Brit. /ˈtɛtrəbrak/
,
U.S. /ˈtɛtrəˌbræk/
(also tetrabrachys) Classical Prosody a word or foot of four short syllables, as facinora, hominibus; as a foot usually called proceleusmatic. [After Greek τετράβραχυς in scholia (medieval Greek or earlier) on Aristophanes Birds 238.]
tetrabrachius n.
Brit. /ˌtɛtrəˈbrakɪəs/
,
U.S. /ˌtɛtrəˈbrækiəs/
(pl. tetrabrachii) a person born with a severe malformation, having four arms. [After scientific Latin tetrabrachius (1861 or earlier) < tetra- tetra- comb. form + ancient Greek βραχίων arm (see brachio-cephalic adj.).]
ΚΠ
1890 J. S. Billings National Med. Dict. II. 659/2 Tetrabrachius, a monster having four arms.
tetracamarous adj.
Brit. /ˌtɛtrəˈkamərəs/
,
U.S. /ˌtɛtrəˈkæmərəs/
Botany having four closed carpels. [After scientific Latin tetracamarus (1815 or earlier) < tetra- tetra- comb. form + ancient Greek καμάρα vault (see camara n.1).]
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having stamens or pistils > of or having style, pistil, or female parts > having specific number or arrangement of carpels
apocarpous1830
carpellary1830
syncarpous1830
polycarpous1836
polycarpic1858
monocarpellary1863
polycarpellary1870
tricarpellary1872
monocarpous1876
tetracamarous1891
tricarpous1891
tricarpellate1900
monocarpellate1960
1860 R. G. Mayne Expos. Lexicon Med. Sci. Tetracamarus,..applied by Mirbel to the etairium which is composed of four camaræ.]
1891 Cent. Dict. Tetracamarous.
1900 in B. D. Jackson Gloss. Bot. Terms
tetracanthous adj.
Brit. /ˌtɛtrəˈkanθəs/
,
U.S. /ˌtɛtrəˈkænθəs/
having four spines, as a fish, etc., or thorns in groups of four, as a plant (Mayne Expos. Lexicon Med. Sci. 1860). [After scientific Latin tetracanthus (1697 or earlier) < tetra- tetra- comb. form + ancient Greek ἄκανθα thorn (see acanthus n.).]
Categories »
tetraˈcarpellary adj.
Brit. /ˌtɛtrəˈkɑːpəl(ə)ri/
,
/ˌtɛtrəˈkɑːpl̩(ə)ri/
,
U.S. /ˌtɛtrəˈkɑrpəˌlɛri/
Botany of a compound fruit: having four carpels.
† tetraˈceratous adj. Zoology Obsolete = tetracerous adj. [After scientific Latin tetraceratus (1824 or earlier); compare Hellenistic Greek τετράκερως four-horned.]
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > [adjective] > of miscellaneous types > belonging to family Tetracera
tetraceratous1860
tetracerous1891
1860 R. G. Mayne Expos. Lexicon Med. Sci. Tetraceratus,..tetraceratous.
tetracerous adj.
Brit. /tᵻˈtrasərəs/
,
/tɛˈtrasərəs/
,
U.S. /təˈtræsərəs/
,
/tɛˈtræsərəs/
Zoology having four ‘horns’ or tentacles; belonging to the Tetracera, a family of four-horned gastropods. [After scientific Latin tetracerus (1737 or earlier); compare French tétracère (1799 or earlier), and Hellenistic Greek τετράκερως four-horned.]
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > [adjective] > of miscellaneous types > belonging to family Tetracera
tetraceratous1860
tetracerous1891
1891 Cent. Dict. Tetracerous.
tetrachaenium n.
Brit. /ˌtɛtrəˈkiːnɪəm/
,
U.S. /ˌtɛtrəˈkiniəm/
(pl. tetrachænia) Botany, pl. a fruit formed of four adherent achenes. [ < scientific Latin tetrachaenium (1847 or earlier), tetrachenium (1831 or earlier), tetrakenium (1824 or earlier) < tetra- tetra- comb. form + akenium achenium n.; compare French tétrakène (1822 or earlier), German Tetrakene (1828 or earlier).]
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > fruit or reproductive product > [noun] > indehiscent fruit or achene
key1440
samara1577
achenium1819
achene1825
caryopsis1830
key fruit1849
tetrachaenium1856
cremocarp1861
Cypsela1861
achaenocarp1874
triachaenium1882
pseudospermium1890
1856 J. S. Henslow Dict. Bot. Tetrachænium.., a fruit formed by the separating of a single ovary into four nuts; as in the Labiatæ.
Categories »
tetrachaetous adj.
Brit. /ˌtɛtrəˈkiːtəs/
,
U.S. /ˌtɛtrəˈkidəs/
Entomology pertaining to the Tetrachætæ, a division of the brachycerous Diptera, comprising those in which the proboscis is composed of four pieces. [After scientific Latin tetrachaeta (1844 or earlier) < tetra- tetra- comb. form + ancient Greek χαίτη mane, hair (see chaeta n.).]
tetrachirus n.
Brit. /ˌtɛtrəˈkʌɪrəs/
,
U.S. /ˌtɛtrəˈkaɪrəs/
a person born with a severe malformation, with four hands. [ < scientific Latin tetrachirus (1831 or earlier) < Hellenistic Greek τετράχειρ four-handed < ancient Greek τετρα- tetra- comb. form + χείρ hand (see cheiro- comb. form).]
ΚΠ
1890 J. S. Billings National Med. Dict. II. 659/2 Tetrachirus, a monster with four hands.
tetrachromatic adj.
Brit. /ˌtɛtrəkrə(ʊ)ˈmatɪk/
,
U.S. /ˌtɛtrəkrəˈmædɪk/
,
/ˌtɛtrəˌkroʊˈmædɪk/
of, relating to, having, or distinguishing four colours.
ΘΚΠ
the world > physical sensation > sight and vision > types of vision > [adjective] > colour
trichromatic1891
tetrachromatic1902
tetrachromic1902
the world > matter > colour > variegation > [adjective] > four colours
four-colour1879
tetrachromatic1902
tetrachromic1902
four-chromatic1952
1902 J. M. Baldwin Dict. Philos. & Psychol. II. 793/2 Ordinary vision, which is tetrachromatic,..was called, under the dominance of the colour-triangle, trichromatic.
tetrachromic adj.
Brit. /ˌtɛtrəˈkrəʊmɪk/
,
U.S. /ˌtɛtrəˈkroʊmɪk/
of four colours; capable of distinguishing (only) four colours of the spectrum.
ΘΚΠ
the world > physical sensation > sight and vision > types of vision > [adjective] > colour
trichromatic1891
tetrachromatic1902
tetrachromic1902
the world > matter > colour > variegation > [adjective] > four colours
four-colour1879
tetrachromatic1902
tetrachromic1902
four-chromatic1952
1902 19th Cent. Apr. 605 The vision of the second eye was tetrachromic.
1903 Nature 19 Nov. 71/2 The second class of the colour-blind see five, four, three, two, or one colour, according to the degree of their defect, and are called pentachromic, tetrachromic, etc.
tetrachromist n.
Brit. /ˈtɛtrəˌkrəʊmɪst/
,
U.S. /ˈtɛtrəˌkroʊməst/
one who holds a theory of four colours; cf. polychromist n.
ΘΚΠ
society > leisure > the arts > visual arts > painting and drawing > painting > art of colouring > [noun] > colourer or colourist
colourer1612
colourist1685
colourman1764
tinter1823
polychromist1842
tetrachromist1842
tonist1883
tintist1890
1842 Wornum in Smith's Dict. Grk. & Rom. Antiq. at Painting §3 Ancient tetrachromists or polychromists.
tetrachronous adj.
Brit. /tᵻˈtrakənəs/
,
/tɛˈtrakənəs/
,
U.S. /təˈtrækənəs/
,
/tɛˈtrækənəs/
Classical Prosody = tetrasemic adj. [Compare post-classical Latin tetrachronos (4th cent.), Hellenistic Greek τετράχρονος containing four time units.]
ΘΚΠ
society > leisure > the arts > literature > poetry > versification > metre > [adjective] > composed in feet > proceleusmatic
proceleusmatic1763
tetrachronous1891
tetrasemic1891
1891 Cent. Dict. Tetrachronous.
tetraclone n.
Brit. /ˈtɛtrəkləʊn/
,
U.S. /ˈtɛtrəˌkloʊn/
a four-rayed sponge-spicule with branched ends ( Cent. Dict. Suppl. 1909). [ < tetra- comb. form + ancient Greek κλών twig, spray (see clone n.); compare German Tetraklon (1894 or earlier).]
tetracoccous adj.
Brit. /ˌtɛtrəˈkɒkəs/
,
U.S. /ˌtɛtrəˈkɑkəs/
Botany having four cocci or carpels; also, applied to bacteria when in four segments (Jackson Gloss. Bot. T. 1900). [After post-classical Latin tetracoccus (1651 or earlier) < tetra- tetra- comb. form + ancient Greek κόκκος berry (see coccus n.). Compare French tétracoque (1803 or earlier).]
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > fruit or reproductive product > [adjective] > simple or collective
tricoccous1697
tricoccose1703
anthocarpous1835
tetracoccous1857
simple1858
monogynoecial1876
collective1880
1857 A. Gray First Lessons Bot. Gloss. 233 Tetracoccous, of four cocci or carpels.
tetracoccus n.
Brit. /ˌtɛtrəˈkɒkəs/
,
U.S. /ˌtɛtrəˈkɑkəs/
(pl. tetracocci) Biology (see quot. 1968). [ < tetra- comb. form + coccus n.; compare German Tetrakokken (plural), French tétracoque (both 1887 or earlier).]
ΘΚΠ
the world > life > biology > organism > micro-organism > bacterium > [noun] > types of
vibrio1850
micrococcus1870
microzyme1870
Spirillum1875
mycothrix1876
leptothrix1877
Spirochaete1877
streptococcus1877
Actinomyces1879
frogspawn1880
schizophyte1880
schizomycetes1881
gonococcus1882
saprophile1882
vibrion1882
coccus1883
diplococcus1883
streptobacteria1883
Clostridium1884
actinomycetes1885
pneumococcus1885
macrococcus1887
staphylococcus1887
iron bacterium1888
Proteus1888
ferrobacterium1890
meningococcus1890
rhizobium1890
sulphobacteria1890
nitrobacterium1891
Streptothrix1891
sulphur bacterium1891
myxobacter1892
Myxococcus1892
tetracoccus1893
coli1894
Pasteurella1895
pyrotoxin1895
Gaertner1897
purple bacterium1897
myxobacterium1898
pseudomonas1899
thiobacteria1900
treponema1908
corynebacterium1909
mycobacterium1909
Salmonella1913
Neisseria1915
botulinum1916
rickettsia1916
leptospira1918
acetobacter1920
Brucella1920
pseudomonad1921
strep1927
enterobacterium1929
opportunist1937
eubacterium1939
agrobacterium1942
persister1944
Moraxella1948
enteric1956
streptomycete1956
leptospire1957
transformant1957
lysogen1958
listeria1961
C. difficile1962
yersinia1967
Campylobacter1971
cyanobacterium1973
coryneform1976
eubacterium1977
legionella1979
acetogen1982
C. diff.1990
acidophilous1996
1893 W. R. Dawson tr. S. L. Schenk Man. Bacteriol. i. 2 Cocci are..found either singly or united in groups... If the elements are joined in pairs and fours we distinguish respectively, according to the number, diplococci and tetracocci.
1907 Practitioner Apr. 488 Two diplococci are frequently seen together, giving a tetra~coccus form.
1968 M. Hynes Med. Bacteriol. (ed. 9) i. 1 Cocci which divide regularly in two planes at right angles to one another result in collections of four organisms, and are known as tetrads or tetracocci.
tetracoral n.
Brit. /ˌtɛtrəˈkɒrəl/
,
/ˌtɛtrəˈkɒrl̩/
,
U.S. /ˌtɛtrəˈkɔrəl/
one of the Tetracoralla, a division of corals (= rugosa n.) in which the septa are in multiples of four. [After scientific Latin Tetracoralla (1882 or earlier); compare German Tetracorallien, Tetrakorallien (1866 or earlier).]
ΚΠ
1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 743 The Palæozoic Corals are for the most part classified as Rugosa s. Tetracoralla... The septa are arranged in four systems, which are either disposed in a bilaterally symmetrical manner..or else are regularly radiate.]
tetracoralline adj.
Brit. /ˌtɛtrəˈkɒrəlʌɪn/
,
/ˌtɛtrəˈkɒrəlɪn/
,
U.S. /ˌtɛtrəˈkɔrələn/
,
/ˌtɛtrəˈkɔrəˌlin/
of or relating to the Tetracoralla.
tetracotylean adj.
Brit. /ˌtɛtrəkɒtᵻˈliːən/
,
U.S. /ˌtɛtrəˌkɑdəˈliən/
Biology having four rounded pit-like suckers on the head or scolex, as a tapeworm. [After scientific Latin tetracotyle or French tétracotyle (both 1854) < ancient Greek τετρα- tetra- comb. form + κοτύλη cup (see cotyle n.); compare ancient Greek τετρακότυλος that contains four cups.]
ΚΠ
1909 Cent. Dict. Suppl. Tetracotylean.
tetracrepid adj.
Brit. /ˌtɛtrəˈkriːpɪd/
,
U.S. /ˌtɛtrəˈkrɛpəd/
a desmic sponge-spicule formed on a tetract nucleus. [ < tetra- comb. form + ancient Greek κρηπιδ-, κρηπίς foundation (see crepis n.) + -id suffix3.]
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > formed on tetract nucleus
tetracrepid1888
1888 W. J. Sollas in Rep. Sci. Results Voy. H.M.S. Challenger: Zool. XXV. p. lix It..is in some cases difficult to say, in the absence of a visible crepis, whether a desma is rhabdocrepid or tetracrepid.
1888 W. J. Sollas in Rep. Sci. Results Voy. H.M.S. Challenger: Zool. XXV. p. lx Tetracrepid Desma.
Categories »
tetracron n.
Brit. /tᵻˈtrakrɒn/
,
/tᵻˈtrakrən/
,
/tɛˈtrakrɒn/
,
/tɛˈtrakrən/
,
U.S. /təˈtræˌkrɑn/
,
/təˈtrækrən/
,
/tɛˈtræˌkrɑn/
,
/tɛˈtrækrən/
(pl. tetracrona, tetracrons) Geometry, pl. a solid having four vertices or solid angles, a tetrahedron; cf. polyacron n. at poly- comb. form 1. [ < tetra- comb. form + ancient Greek ἄκρον summit, use as noun of neuter of ἄκρος highest, topmost (see acro- comb. form).]
Categories »
tetradenous adj.
Brit. /ˌtɛtrəˈdiːnəs/
,
U.S. /ˌtɛtrəˈdinəs/
Botany having four glands (Mayne 1860). [After scientific Latin tetradenus (1828 or earlier); compare French tétradène (1834 or earlier).]
tetraëterid n.
Brit. /ˌtɛtrəˈɛtərɪd/
,
U.S. /ˌtɛtrəˈɛdərəd/
(also ‖tetraˈëteris) a space of four years, a quadrennium. [ < post-classical Latin tetraeteris (3rd cent.) or its etymon ancient Greek τετραετηριδ-, τετραετηρίς < τετρα- tetra- comb. form + ἔτος year (see etesian adj.) + -ίς -id suffix2.]
ΘΚΠ
the world > time > period > year > [noun] > period of specific number of years
hendecadOE
a week of yearsa1382
weekc1384
Olympiada1387
lustre1387
yearc1425
millenary1551
prenticeship1553
septenary1576
lustrum1590
quinquennal1590
seventy1590
septimane1603
quinquennie1606
threescore (years) and tena1616
duodecad1621
quinquennium1621
jubilee1643
quadrenniala1646
chiliad1653
septennary1659
septennium1660
triennial1661
millennium1664
tetraëterid1678
octennial1679
duodenary1681
quadrennium1779
septenniad1836
quinquenniad1842
milliad1843
tricentenary1846
triennium1847
vicennium1847
bimillenary1850
lustration1853
sexennium1858
septennate1874
quinquennial1877
pentad1880
sexennate1898
aeon1960
1678 E. Phillips New World of Words (new ed.) Tetraeterid,..the space of four years, a word used by Astronomers, and Astrologers.
a1727 I. Newton Chronol. Anc. Kingdoms Amended (1728) i. 75 [The Greeks] omitted an intercalary month once in eight years, which made their Octaeteris, one half of which was their Tetraeteris.
Categories »
tetrafoliate adj. Obsolete Botany four-leaved; = tetraphyllous adj.; bijugate (Mayne).
Categories »
† tetraˈfolious adj. Obsolete Botany four-leaved; = tetraphyllous adj.; bijugate (Mayne).
tetragamelian adj. and n.
Brit. /ˌtɛtrəɡəˈmiːlɪən/
,
U.S. /ˌtɛtrəɡəˈmiliən/
(a) adj. belonging to the Tetragamelia, a division of discomedusans ( Hydrozoa acraspeda) having four subgenital pits; (b) n. a member of this division. [ < scientific Latin Tetragameliae (1878 or earlier; < tetra- tetra- comb. form + ancient Greek γαμήλιος bridal) + -an suffix.]
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [adjective] > relating to jellyfish of class Scyphozoa > belonging to division Tetragamelia
tetragamelian1881
1881 Lankester in Encycl. Brit. XII. 557/1 In the Tetragamelian Rhizostomæ these pits remain distinct from one another.., but in the Monogamelian Rhizostomæ they unite to form one continuous sub-genital cavity.
tetragamy n.
Brit. /tᵻˈtraɡəmi/
,
/tɛˈtraɡəmi/
,
U.S. /təˈtræɡəmi/
,
/tɛˈtræɡəmi/
a fourth marriage; (also) marriage with four women simultaneously. [After post-classical Latin tetragamia (1545 or earlier) or its etymon Byzantine Greek τετραγαμία.]
ΘΚΠ
society > society and the community > kinship or relationship > marriage or wedlock > remarriage > [noun] > more than once
octogamyc1395
trigamy1615
tetragamy1862
society > society and the community > kinship or relationship > marriage or wedlock > types of marriage custom or practice > [noun] > polygamy > state of having four spouses
tetragamy1862
1862 J. C. Robertson Hist. Christian Church II. iv. v. 402 (note) He [Symeon Magister] says that the lawfulness of ‘tetragamy’ was believed to have been revealed to Euthymius.
1907 W. De Morgan Alice-for-Short xviii. 203 Charles had said to his friend, jokingly, that if he had fifty sisters, single ones, Johnson was welcome to make offers to them all round.—‘But then, my dear Paracelsus, that was to be if I had fifty. That would leave me forty-nine—or in case of bigamy, forty-eight; or quadrogamy—tetragamy—whatever it ought to be—forty-six.’
1918 R. A. Knox Spiritual Aeneid x. 166 We could always split the difference between monogamy and tetragamy by having two wives all round.
tetragenous adj.
Brit. /tᵻˈtradʒᵻnəs/
,
/tɛˈtradʒᵻnəs/
,
U.S. /təˈtrædʒənəs/
,
/tɛˈtrædʒənəs/
Bacteriology forming square groups of four, as certain micrococci. [Compare French tétragène (1887 or earlier).]
ΘΚΠ
the world > life > biology > organism > micro-organism > bacterium > [adjective] > specific quality of
tetragenous1888
lysogenic1899
toxicogenic1899
cryophilic1916
R1920
rough1921
smooth1921
sulphate-reducing1926
thermoduric1927
lac−1947
induced1951
inducible1953
thermoacidophilic1976
1888 Science 15 June 283/2 The constituents of the colony turned out to be a tetragenous microbe quite distinct from the plain atmospheric micrococcus.
tetragnath adj. and n.
Brit. /tᵻˈtraɡnəθ/
,
/tɛˈtraɡnəθ/
,
U.S. /təˈtræɡnəθ/
,
/tɛˈtræɡnəθ/
(a) adj. having four jaws; (b) n. a kind of spider with four jaws. [As noun < post-classical Latin tetragnathus (1533 or earlier), tetragnathum (1562 or earlier) < Hellenistic Greek τετράγναθος having four jaws; compare Middle French, French tetragnathe, noun (1562).]
ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Arachnida > [noun] > order Aranea > member of (spider) > unspecified type > having four jaws
tetragnath1608
1608 E. Topsell Hist. Serpents 250 Nicander..confesseth, that the Ash-coloured Tetragnath, doth not by his byting infuse any venome or like hurt.
1835 W. Kirby On Power of God in Creation of Animals II. xvi. 85 Those Phalangians which are denominated Tetragnatha, or having four jaws.
† tetraˈgnathian adj. Obsolete
ΘΚΠ
the world > animals > animal body > general parts > head and neck > [adjective] > of the jaw or chin > having four jaws
tetragnathian1608
1608 E. Topsell Hist. Serpents 250 If a man be wounded of the Tetragnathian-Spyder, the place waxeth whitish, with an intollerable, vehement, and continuall paine in it.
tetragonidium n.
Brit. /ˌtɛtrəɡə(ʊ)ˈnɪdɪəm/
,
U.S. /ˌtɛtrəɡəˈnɪdiəm/
Botany = tetraspore n. [ < scientific Latin Tetragonidium (1846 or earlier) < tetra- tetra- comb. form + gonidium gonidium n.]
ΘΚΠ
the world > plants > particular plants > algae > [noun] > red algae > part or cell of
nemathecium1830
ceramidium1849
tetraspore1857
trichophore1860
phycoerythrin1866
coccidium1867
kalidium1872
cystocarp1875
palmelline1879
tetragonidium1882
rhodoplast1886
nemathece1889
siphon1889
tetrasporangium1890
1882 S. H. Vines tr. J. von Sachs Text-bk. Bot. (ed. 2) 289 The asexual organs of reproduction are gonidia: since four are usually formed in a mother-cell, they are termed Tetragonidia... When the thallus consists of rows of cells, the tetragonidia are produced in the apical cell of lateral branches.
tetraleioclone n.
Brit. /ˌtɛtrəˈlʌɪə(ʊ)kləʊn/
,
U.S. /ˌtɛtrəˈlaɪəˌkloʊn/
a four-rayed sponge-spicule with smooth arms ( Cent. Dict. Suppl. 1909). [After German Tetraleioclon (1894 or earlier) < tetra- tetra- comb. form + ancient Greek λεῖος smooth (see leio- comb. form) + κλών twig, spray (see clone n.); compare tetraclone n.]
tetralemma n.
Brit. /ˌtɛtrəˈlɛmə/
,
U.S. /ˌtɛtrəˈlɛmə/
Logic a position presenting four alternatives. [ < post-classical Latin tetralemma (1654 or earlier; < tetra- tetra- comb. form + lemma lemma n.1); compare dilemma n.]
ΘΚΠ
the mind > mental capacity > philosophy > logic > logical syllogism > logical argument > [noun] > types of logical argument > dilemma > types, variants, or elements of
pike1548
crocodilite1624
trilemma1672
crocodile1728
constructive dilemma1826
polylemmaa1856
tetralemmaa1856
a1856 W. Hamilton Lect. Metaphysics (1860) III. xviii. 352 If it [sc. the syllogism] has three, four, or five members, it is called trilemma (tricornis), tetralemma (quadricornis), pentalemma (quinquecornis).
1867 L. H. Atwater Elem. Logic 151 The names Trilemma, Tetralemma, Polylemma have been sometimes given to this sort of Syllogism according to the number of members or horns.
tetralophodont adj.
Brit. /ˌtɛtrəˈləʊfədɒnt/
,
U.S. /ˌtɛtrəˈlɑfəˌdɑnt/
,
/ˌtɛtrəˈloʊfəˌdɑnt/
having molars with four transverse ridges, as the sub-genus Tetralophodon of mastodons. [ < tetra- comb. form + ancient Greek λόϕος ridge (see lopho- comb. form) + -odont comb. form, after scientific Latin Tetralophodon (1857 or earlier).]
ΘΚΠ
the world > animals > mammals > group Ungulata (hoofed) > order Proboscidea (elephants) > [adjective] > of miscellaneous extinct types
tetralophodont1889
stegodont1894
1889 H. A. Nicholson & R. Lydekker Man. Palæontol. (ed. 3) II. 1398 In the Tetralophodont group the number of ridges in the cheek-teeth is greater than in the former group.
tetramasthous adj.
Brit. /ˌtɛtrəˈmasθəs/
,
U.S. /ˌtɛtrəˈmæsθəs/
having four breasts. [ < scientific Latin tetramasthos (1844 or earlier) < tetra- tetra- comb. form + ancient Greek μασθός breast (see masto- comb. form2).]
ΘΚΠ
the world > health and disease > ill health > deformity > deformities of specific parts > [adjective] > of breasts
tetramasthous1860
polymastoid1879
polymastic1891
1860 R. G. Mayne Expos. Lexicon Med. Sci. Tetramasthous.
1890 J. S. Billings National Med. Dict. II Tetramasthous, having four breasts.
tetramastigate adj.
Brit. /ˌtɛtrəˈmastᵻɡət/
,
/ˌtɛtrəˈmastᵻɡeɪt/
,
U.S. /ˌtɛtrəˈmæstəˌɡeɪt/
having four flagella ( Cent. Dict. 1891). [ < tetra- comb. form + ancient Greek μαστιγ-, μάστιξ whip (see -mastix comb. form) + -ate suffix2.]
tetramyrmeclone n.
Brit. /ˌtɛtrəˈməːmᵻkləʊn/
,
U.S. /ˌtɛtrəˈmərməˌkloʊn/
a four-rayed sponge-spicule, the arms covered with tubercles ( Cent. Dict. Suppl. 1909). [After German Tetramyrmeclon (1894 or earlier) < tetra- tetra- comb. form + ancient Greek μυρμηκιά wart (see myrmekite n.) + κλών twig, spray (see clone n.); compare tetraclone n.]
tetranephric adj.
Brit. /ˌtɛtrəˈnɛfrɪk/
,
U.S. /ˌtɛtrəˈnɛfrɪk/
having four uriniferous or Malpighian tubes. [ < tetra- comb. form + ancient Greek νεϕρός kidney (see nephro- comb. form) + -ic suffix.]
ΘΚΠ
the world > animals > animal body > general parts > substance or secretion and excretion > [adjective] > having four uriniferous tubes
tetranephric1898
1898 A. S. Packard Text-bk. Entomol. 355 In at least one case (Melolontha), the tetranephric is ontogenetically derived from the hexanephric condition by the suppression of one pair of tubules.
tetranomial adj.
Brit. /ˌtɛtrəˈnəʊmɪəl/
,
U.S. /ˌtɛtrəˈnoʊmiəl/
Mathematics consisting of four (algebraic) terms; quadrinomial. [ < tetra- comb. form + -nomial comb. form, after binomial adj.]
ΘΚΠ
the world > relative properties > number > algebra > [adjective] > relating to expressions > involving specific number of terms
binomial1570
multinomial1608
quadrinomial1673
solinomial1690
polynomial1704
trinomial1704
infinitinomial1706
monomial1801
tetranomial1817
unipartite1819
monome1829
mononomial1861
polynomic1868
tripartite1869
multinominal1940
1817 H. T. Colebrooke tr. Brahmagupta in Algebra 280 Put the binomial root for first term;..then put the trinomial, and afterwards the tetranomial, for first radical term; until the proposed number be exhausted.
tetraparental adj.
Brit. /ˌtɛtrəpəˈrɛntl/
,
U.S. /ˌtɛtrəpəˈrɛn(t)l/
Biology (of an organism) produced by the fusion of two embryos; also as n., a tetraparental individual.
ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > [noun] > produced by fusion of two
tetraparental1970
the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > [adjective] > produced by fusion of two
allophenic1967
tetraparental1970
1970 Nature 31 Jan. 462/2 Tetraparental mice are produced by fusing two eight-cell stage embryos.
1970 Nature 31 Jan. 462/2 Allelic differences between the strains produce mosaic patterns in the adult tetraparental which make possible inferences about development.
1971 New Scientist 8 Apr. 72/1 One of the most fascinating tools employed in studying these processes [of tissue differentiation]..is provided by ‘tetra~parental’ mice.
1979 Nature 11 Oct. 429/1 B. Mintz (Institute for Cancer Research, Philadelphia)..pioneered the use of allophenic mice (formed by aggregating cells from two 8-cell embryos from two different pregnant mice, hence tetraparental).
tetraparesis n.
Brit. /ˌtɛtrəpəˈriːsɪs/
,
U.S. /ˌtɛtrəpəˈrisᵻs/
Pathology muscular weakness of all four limbs.
ΘΚΠ
the world > health and disease > ill health > a disease > diseases of tissue > disorders affecting muscles > [noun] > weakness
myasthenia1833
tetraparesis1972
1972 Blakiston's New Gould Med. Dict. (ed. 3) Tetraparesis, weakness of all four extremities.
1980 Brit. Med. Jrnl. 29 Mar. 902/2 She was anarthric and bedridden with spastic tetraparesis and twitching tremors.
tetraparetic adj.
Brit. /ˌtɛtrəpəˈrɛtɪk/
,
U.S. /ˌtɛtrəpəˈrɛdɪk/
ΘΚΠ
the world > health and disease > ill health > a disease > diseases of tissue > disorders affecting muscles > [adjective] > weakness
myasthenic1857
tetraparetic1978
1978 Jrnl. Royal Soc. Med. 71 449 A woman..who was tetraparetic following operation for a cerebral tumour.
tetraphalangeate adj.
Brit. /ˌtɛtrəfəˈlan(d)ʒɪeɪt/
,
U.S. /ˌtɛtrəfəˈlændʒiˌeɪt/
Comparative Anatomy having four phalanges.
ΘΚΠ
the world > animals > animal body > general parts > constituent materials > [adjective] > having four phalanges
tetraphalangeate1898
1898 Nature 3 Feb. 319/1 In the full-grown fœtus of a Vespertilio the fourth digit of the manus is tetraphalangeate.
tetrapharmacal adj.
Brit. /ˌtɛtrəˈfɑːməkl/
,
U.S. /ˌtɛtrəˈfɑrmək(ə)l/
compounded of four ingredients.
ΘΚΠ
the world > health and disease > healing > medicines or physic > [adjective] > composed of single ingredient > of mixed ingredients
tetrapharmacal1657
1657 R. Tomlinson tr. J. de Renou Physical Inst. iv, in Medicinal Dispensatory sig. T3 The Tetrapharmacal unguent [L. vnguento tetrapharmaco], which consists..of Wax, Rosine, Pitch and Bulls fat.
tetrapharmacon n.
Brit. /ˌtɛtrəˈfɑːmək(ə)n/
,
U.S. /ˌtɛtrəˈfɑrməˌkɑn/
(also in Latin form tetraˈpharmacum) a medicine or ointment consisting of four ingredients. [ < classical Latin tetrapharmacon ointment or plaster that contains four ingredients (wax, tallow, pitch, resin) (Pliny) < ancient Greek τετραϕάρμακον < τετρα- tetra- comb. form + ϕάρμακον (see pharmaco- comb. form).]
ΘΚΠ
the world > health and disease > healing > medicines or physic > [noun] > a medicine or medicament > medicine of mixed ingredients
confectiona1398
mixtiona1398
diatessaronc1400
ingredience1526
mixture1562
diapente1610
ingrediency1639
tetrapharmacon1728
polypharmaceutical1961
1728 E. Chambers Cycl. Tetrapharmacum,..is any Remedy consisting of four Ingredients.
1842 W. T. Brande Dict. Sci., Lit. & Art 1226/1 Tetrapharmacon, an ointment composed of four remedies; namely, wax, resin, lard, and pitch.
tetraphonic n.
Brit. /ˌtɛtrəˈfɒnɪk/
,
/ˌtɛtrəˈfəʊnɪk/
,
U.S. /ˌtɛtrəˈfɑnɪk/
applied to certain forms of quadraphonic recording and reproduction (see quots.).
ΘΚΠ
society > communication > record > recording or reproducing sound or visual material > sound recording and reproduction > [adjective] > recorded by specific system
taped1892
phonographed1897
acoustic1926
acoustical1926
stereophonic1927
monaural1931
multitracked1931
binaural1933
multitrack1935
tape-recorded1951
telediphoned1952
stereo1954
multi-taped1955
monophonic1958
pretaped1958
mono1960
audiotaped1962
multichannel1962
quarter-track1962
Dolby1966
quadraphonic1968
tetraphonic1969
periphonic1970
quad1970
quadrasonic1970
Dolbyized1971
QS1972
Dolbyed1973
premix1977
quadro1977
1969 db Dec. 23/2 Microphones are placed so channels 1 and 3, and 2 and 4 will operate as pairs to give three walls of sound... In addition, channels 3 and 4 operate as a stereo pair to sharpen the directionality of the reflected sound... When we discovered this..we called it Tetraphonic Sound.
1974 Wireless World July 236/2 Gerzon's assertion that ‘the optimum characteristic is not known’ in regard to a particular tetraphonic technique could be equally well applied to any quadraphonic system.
1977 Daily Tel. 4 May 18 ‘Tetraphonic’ has already been given the technical meaning of a set of signals giving complete first-order directional information including height.
Categories »
tetraphony n.
Brit. /tᵻˈtrafəni/
,
/tɛˈtrafəni/
,
U.S. /təˈtræfəni/
,
/tɛˈtræfəni/
in early medieval music, diaphony for four voices. [After post-classical Latin tetraphonia (1650 or earlier); compare French tétraphonie (1830 or earlier), German Tetraphonie (1801 or earlier).]
tetraphyletic adj.
Brit. /ˌtɛtrəfʌɪˈlɛtɪk/
,
U.S. /ˌtɛtrəˌfaɪˈlɛdɪk/
see quot.
ΘΚΠ
the world > plants > variety or species > [adjective] > hybrid
bigeneric1817
tetraphyletic1900
triphyletic1900
1900 B. D. Jackson Gloss. Bot. Terms Tetraphyletic, applied to hybrids with four strains in their descent.
tetraphyllous adj.
Brit. /ˌtɛtrəˈfɪləs/
,
U.S. /ˌtɛtrəˈfɪləs/
(abbreviated 4-phyllous) Botany having or consisting of four leaves. [Compare Hellenistic Greek τετράϕυλλος.]
ΘΚΠ
the world > plants > part of plant > leaf > plant defined by leaves > [adjective] > having many or particular number of leaves
cinquefoilc1420
quatrefoil?1440
five-leaved1658
two-leaved1688
septifolious1721
tetraphyllous1731
trefoil1752
biphyllous1756
triphyllous1760
polyphyllous1785
decaphyllous1793
four-leaved1793
bifoliate1836
trefoiled1854
decemfoliate1858
polyphylline1872
trefoliated1900
decemjugate-
1731 N. Bailey Universal Etymol. Eng. Dict. II Tetraphyllous.
1775 J. Jenkinson Linnæus' Generic & Specific Descr. Brit. Plants 158 The cup [of Charnock] is tetraphyllous and erect.
tetraplocaulous adj.
Brit. /ˌtɛtrəplə(ʊ)ˈkɔːləs/
,
U.S. /ˌtɛtrəploʊˈkɔləs/
,
/ˌtɛtrəploʊˈkɑləs/
Botany see quot. [ < ancient Greek τετραπλοῦς fourfold (see tetraplous adj.) + καυλός stem (see caul n.2) + -ous suffix.]
ΘΚΠ
the world > plants > part of plant > stem or stalk > [adjective] > having specific type caudex or axis
tetraplocaulous1900
triplo-caulescent1900
triplo-caulous1900
1900 in B. D. Jackson Gloss. Bot. Terms Tetraplocaulous, having quaternary axes.
tetrapneumonian adj. and n.
Brit. /ˌtɛtrə(p)njuːˈməʊnɪən/
,
/ˌtɛtrə(p)njᵿˈməʊnɪən/
,
U.S. /ˌtɛtrə(p)nəˈmoʊnjən/
,
/ˌtɛtrə(p)n(j)uˈmoʊnjən/
Zoology (a) adj. of or pertaining to the Tetrapneumones, a division of spiders with two pairs of lung-sacs ( Cent. Dict. 1891); (b) n. a spider of this division. [After scientific Latin Tetrapneumones (1825 or earlier); compare French tétrapneumones (1825 or earlier).]
ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Arachnida > [adjective] > of or belonging to Araneida > of or relating to Tetrapneumones
tetrapneumonian1842
the world > animals > invertebrates > phylum Arthropoda > class Arachnida > [noun] > order Aranea > division Tetrapneumones > member of
tetrapneumonian1842
1842 W. T. Brande Dict. Sci., Lit. & Art 1226/1 Tetrapneumonians, Tetrapneumones,..a section of spiders..comprehending those which have four pulmonary sacs.
Categories »
tetrapneumonous adj.
Brit. /ˌtɛtrə(p)ˈnjuːmənəs/
,
U.S. /ˌtɛtrə(p)ˈn(j)umənəs/
Zoology having four lungs or respiratory organs; applied to the Tetrapneumones (see preceding) and to the Tetrapneumona, a group of holothurians (sea-cucumbers).
tetrapolar adj.
Brit. /ˌtɛtrəˈpəʊlə/
,
U.S. /ˌtɛtrəˈpoʊlər/
Biology having four (instead of only two) poles or centres of radiation: said of a karyokinetic figure. [Compare French tétrapolaire (1887 or earlier).]
ΘΚΠ
the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > chromosome > multipolarity
multipolar1894
tetrapolar1902
1902 D. J. Hamilton in Encycl. Brit. XXXI. 514/1 (Description of Plate) D. Tetrapolar karyokinesis. E. Another form of tetrapolar division.
tetrapous adj.
Brit. /ˈtɛtrəpəs/
,
U.S. /ˈtɛtrəpəs/
four-footed. [After ancient Greek τετράπους; compare post-classical Latin tetrapus (perhaps 5th cent.).]
ΘΚΠ
the world > animals > animal body > general parts > body and limbs > [adjective] > of feet > having feet > four-footed
fetherfootedc1175
four-footedc1175
four-foota1400
quadrupeded1542
quadrupedal1620
quadruped1649
quadrupedant1656
quadrupedical1824
tetrapod1859
quadrupedic1888
tetrapous1899
1890 J. S. Billings National Med. Dict. II Tetrapus, having four feet.]
1899 New Sydenham Soc. Lexicon Tetrapous.
tetraprionidian adj.
Brit. /ˌtɛtrəprʌɪəˈnɪdɪən/
,
U.S. /ˌtɛtrəˌpraɪəˈnɪdiən/
applied to graptolites having four rows of thecæ showing four serrated edges. [ < tetra- comb. form + ancient Greek πρίων a saw (see prion n.1) + -idian suffix, after scientific Latin Tetraprionidae (1869 or earlier); compare monoprionidian adj., diprionidian adj.]
ΘΚΠ
the world > animals > invertebrates > zoophyte > [adjective] > of or relating to graptolites > having four rows of thecae with serrated edges
tetraprionidian1888
1888 Cassell's Encycl. Dict. VII. Tetraprionidian.
tetraprostyle adj.
Brit. /ˌtɛtrəˈprəʊstʌɪl/
,
/ˌtɛtrəˈprɒstʌɪl/
,
U.S. /ˌtɛtrəˈproʊˌstaɪl/
of an ancient temple: having a portico with four pillars in front.
ΘΚΠ
society > leisure > the arts > visual arts > architecture > column > [adjective] > having specific number of columns
decastyle1727
polystyle1736
hexastyle1748
octastyle1832
tetrastyle1837
triprostyle1841
heptastyle1843
polystylar1843
monostylar1844
monostyle1850
monostyle1850
enneastyle1875
pentastyle1882
tetraprostyle1891
tetrastylic1895
hexastylar-
1891 Cent. Dict. Tetraprostyle.
† teˈtraptative adj. Obsolete rare that combines four things. [Compare post-classical Latin tetraptativus (15th cent., in a text on alchemy, or earlier). Perhaps compare tetraptote n.]
ΘΚΠ
the world > relative properties > number > specific numbers > four > [adjective] > that combines four things
tetraptative1471
1471 G. Ripley Compound of Alchymy iv. viii, in E. Ashmole Theatrum Chem. Britannicum (1652) 146 The thyrd manner and also the last of all, Fowre Elements together whych joynyth to abyde, Tetraptative certainely Phylosophers doth hyt call.
tetraptote n.
Brit. /ˈtɛtrəptəʊt/
,
U.S. /ˈtɛtrəpˌtoʊt/
Grammar a noun with (only) four cases. [ < post-classical Latin tetraptotum (from 4th cent. in grammarians) < Greek τετράπτωτον (in scholia (medieval Greek or earlier) on Dionysius Thrax 231. 4), use as noun of τετράπτωτος (adjective) having four cases < ancient Greek τετρα- tetra- comb. form + Hellenistic Greek -πτωτος falling, cognate with ancient Greek πτῶσις ptosis n.]
ΘΚΠ
the mind > language > linguistics > study of grammar > a part of speech > noun > [noun] > noun with specific number of cases
aptote1589
diptote1612
monoptote1612
triptote1612
pentaptote1616
tetraptote1656
polyptote1658
1656 T. Blount Glossographia Tetraptote, declined in four cases.
1704 J. Harris Lexicon Technicum I Tetraptotes,..such defective Nouns, as have only four Cases; as Plus, which wants the Dative and Vocative Singular.
Categories »
tetraptych n.
Brit. /tᵻˈtraptɪk/
,
/tɛˈtraptɪk/
,
U.S. /təˈtræptɪk/
,
/tɛˈtræptɪk/
rare a folding picture or the like in four compartments; cf. triptych n. [Compare post-classical Latin tetraptychon , apparently denoting a writing tablet with four leaves (1659 or earlier), tetraptychus having four folds or leaves (1784 or earlier), ancient Greek τετράπτυχος fourfold; compare also diptych n., triptych n.]
tetrapylon n.
Brit. /ˌtɛtrəˈpʌɪlɒn/
,
/ˌtɛtrəˈpʌɪlən/
,
U.S. /ˌtɛtrəˈpaɪˌlɑn/
a building or structure with four gates. [ < post-classical Latin tetrapylum (6th cent.) < Byzantine Greek τετράπυλον archway entered from four sides, use as noun of neuter of Hellenistic Greek τετράπυλος having four gateways < ancient Greek τετρα- tetra- comb. form + πύλη gate (see -pyle comb. form).]
ΘΚΠ
society > inhabiting and dwelling > inhabited place > a building > building of specific shape > [noun]
quadrangle1596
rotund1606
rotundo1614
camera1633
rotunda1648
tholosc1660
umbrella1680
octagon1767
round tower1790
cone1791
flat-iron1862
tetragon1884
tempietto1896
tetrapylon1904
igloo1956
shoebox1968
1904 H. C. Butler Archit. & other Arts xii. 393 Conjectured to have been vaulted tetrapylons at the crossing of the thoroughfares.
Categories »
tetrapyramid n.
Brit. /ˌtɛtrəˈpɪrəmɪd/
,
U.S. /ˌtɛtrəˈpɪrəˌmɪd/
Crystallography in the triclinic system, that form in which each of the two faces intercepts the three crystallographic axes.
† tetrapyˈrenous adj. Botany Obsolete having four stones, as a fruit. [After post-classical Latin tetrapyrenos (1671 or earlier).]
ΚΠ
1727 N. Bailey Universal Etymol. Eng. Dict. II Tetrapyrenos, which has four Seeds or Kernels, as Agrifolium, Holly, &c.]
tetraquetrous adj.
Brit. /ˌtɛtrəˈkwiːtrəs/
,
/ˌtɛtrəˈkwɛtrəs/
,
U.S. /ˌtɛtrəˈkwitrəs/
,
/ˌtɛtrəˈkwɛtrəs/
Botany having four sharp angles. [After post-classical Latin tetraquetrus four-angled (1680 or earlier).]
ΘΚΠ
the world > plants > part of plant > part defined by form or function > [adjective] > having particular number sides or angles
tetragonal1753
tetragonous1760
tetraquetrous1882
1882 Maw in Jrnl. Bot., Brit. & Foreign 20 88 The Scape..is either tetraquetrous or triquetrous.
tetrascelus n.
Brit. /tᵻˈtrasᵻləs/
,
/tɛˈtrasᵻləs/
,
U.S. /təˈtræsələs/
,
/tɛˈtræsələs/
a person born with a severe malformation, having two pairs of legs. [ < scientific Latin tetrascelus (1832 or earlier) < ancient Greek τετρασκελής four-legged < τετρα- tetra- comb. form + σκέλος leg (see scelides n.).]
ΚΠ
1890 J. S. Billings National Med. Dict. I. 678/2 Tetrascelus, a monster in which the legs are duplicated.
tetraschistic adj.
Brit. /ˌtɛtrəˈskɪstɪk/
,
U.S. /ˌtɛtrəˈskɪstɪk/
Biology dividing into four by fission. [Compare scientific Latin tetraschistum , specific name (1879), and Greek τετράσχιστος split or parted into four (recorded in a glossary) < ancient Greek τετρα- tetra- comb. form + σχιστός cloven (see schist n.1).]
ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [adjective] > by division
fissiparous1835
tomiparous1842
scissiparous1845
tetraschistic1885
segmenting1912
plasmotomic1949
1885 E. R. Lankester in Encycl. Brit. XIX. 834/2 They [chlorophyll corpuscles] multiply by fission, usually tetraschistic, independently of the general protoplasm.
tetraselenodont adj.
Brit. /ˌtɛtrəsᵻˈliːnə(ʊ)dɒnt/
,
U.S. /ˌtɛtrəsəˈlinəˌdɑnt/
,
/ˌtɛtrəsəˈlɛnəˌdɑnt/
having four crescentic ridges, as a molar tooth; also said of a ruminant that has such teeth.
ΘΚΠ
the world > animals > mammals > group Ungulata (hoofed) > group Ruminantia (sheep, goats, cows, etc.) > [adjective] > having particular type of teeth
tetraselenodont1890
1890 Amer. Naturalist 24 471 To sustain the view that the tetraselenodont forms are the descendants of the pentaselenodont Artiodactyla.
tetraseme n. and adj.
Brit. /ˈtɛtrəsiːm/
,
U.S. /ˈtɛtrəˌsim/
Prosody (a) n. a foot consisting of or equal to four short syllables; (b) adj. = tetrasemic adj. [ < post-classical Latin tetrasemos (adjective) having four metrical units (4th cent.) < Hellenistic Greek τετράσημος (adjective) having four metrical units < ancient Greek τετρα- tetra- comb. form + σῆμα sign, mark (see sema n.).]
ΘΚΠ
society > leisure > the arts > literature > poetry > versification > metre > [noun] > foot > four short syllables
proceleusmatic1708
tetraseme1895
1895 B. L. Gildersleeve Lat. Gram. (ed. 3) 459 Tetraseme long.
tetrasemic adj.
Brit. /ˌtɛtrəˈsiːmɪk/
,
U.S. /ˌtɛtrəˈsimɪk/
Prosody equivalent to four moræ or short syllables.
ΘΚΠ
society > leisure > the arts > literature > poetry > versification > metre > [adjective] > composed in feet > proceleusmatic
proceleusmatic1763
tetrachronous1891
tetrasemic1891
1891 Cent. Dict. Tetrasemic.
tetrasepalous adj.
Brit. /ˌtɛtrəˈsɛp(ə)ləs/
,
/ˌtɛtrəˈsiːp(ə)ləs/
,
U.S. /ˌtɛtrəˈsɛp(ə)ləs/
Botany having four sepals. [After scientific Latin tetrasepalus (1790 or earlier).]
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having calyx > of, having, or positioned near sepals
two-sepalled1821
polysepalous1829
tetrasepalous1829
monosepalous1830
sepaloid1830
trisepalous1830
valvate1830
synsepalous1847
sepaline1857
tripaleolate1866
antisepalous1878
1829 J. C. Loudon Encycl. Plants 1069 A tetrasepalous tetrapetalous flower.
tetraskele n.
Brit. /ˈtɛtrəskiːl/
,
U.S. /ˈtɛtrəˌskil/
(also tetrascele
Brit. /ˈtɛtrəsiːl/
,
U.S. /ˈtɛtrəˌsil/
) a figure consisting of four limbs radiating from a centre; spec. the fylfot n. ( Cent. Dict. Suppl. 1909). [ < ancient Greek τετρασκελής four-legged (see tetrascelus n.); compare Italian tetrascele (1829 or earlier), French tetraskele (1877 or earlier), Danish tetraskele (1877 or earlier), German Tetraskele (1879 or earlier).]
tetraskelion n.
Brit. /ˌtɛtrəˈskɛlɪən/
,
U.S. /ˌtɛtrəˈskɛliən/
= tetraskele n.
tetraspaston n.
Brit. /ˌtɛtrəˈspastən/
,
U.S. /ˌtɛtrəˈspæstən/
see quot. [ < post-classical Latin tetraspaston (1658 or earlier) < tetra- tetra- comb. form + ancient Greek -σπαστος (see pentaspast n.); compare Greek τετράσπαστος, an uncertain reading in an inscription, of uncertain sense.]
ΘΚΠ
society > occupation and work > equipment > machine > other specific machines > [noun]
reeler1598
driver1659
rubber1747
heading machine1795
bruiser1809
finisher1835
stripper1835
physionotype1836
rotary1836
tetraspaston1842
netting-machine1846
speeder1847
dresser1855
spacer1857
starcher1862
bronzing liquid, machine1865
finishing machine1869
grader1869
brain machine1872
peanut roaster1872
bending machine1874
screw-machine1876
tire-upsetting-machine1877
buncher?1881
flax-breaker1889
oscillator1889
fluoroscope1893
fluorometer1897
mucker1916
spray dryer1921
paver1926
teabagger1940
burster1950
icemaker1953
laminator1958
slipform (concrete) paver1958
extruder1959
Zamboni1965
manipulator1968
wave machine1968
pipelayer1969
walking machine1971
1842 W. T. Brande Dict. Sci., Lit. & Art 1226/1 Tetraspaston, in Mechanics, a machine in which four pulleys all act together.
tetraspermal adj.
Brit. /ˌtɛtrəˈspəːml/
,
U.S. /ˌtɛtrəˈspərm(ə)l/
= tetraspermous adj. [After scientific Latin tetraspermalis (1836 or earlier).]
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > seed > plant having seed > [adjective] > of specific number or many
monospermous1687
polyspermous1687
polysperm1729
dispermous1760
tetraspermous1760
trispermous1760
one-seededa1794
monosperm1838
dispermatous1854
monospermal1857
monospermatous1857
polyspermatous1858
tetraspermal1860
tetraspermatous1860
polyspermal1882
monospermic1891
1860 R. G. Mayne Expos. Lexicon Med. Sci. Tetraspermatus,..four-seeded: tetraspermal: tetraspermatous.
tetraspermatous adj.
Brit. /ˌtɛtrəˈspəːmətəs/
,
U.S. /ˌtɛtrəˈspərmədəs/
= tetraspermous adj.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > seed > plant having seed > [adjective] > of specific number or many
monospermous1687
polyspermous1687
polysperm1729
dispermous1760
tetraspermous1760
trispermous1760
one-seededa1794
monosperm1838
dispermatous1854
monospermal1857
monospermatous1857
polyspermatous1858
tetraspermal1860
tetraspermatous1860
polyspermal1882
monospermic1891
1860 R. G. Mayne Expos. Lexicon Med. Sci. Tetraspermatus,..four-seeded: tetraspermal: tetraspermatous.
tetraspermous adj.
Brit. /ˌtɛtrəˈspəːməs/
,
U.S. /ˌtɛtrəˈspərməs/
Botany having four seeds, or seeds in fours. [After post-classical Latin tetraspermus (1686 or earlier).]
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > seed > plant having seed > [adjective] > of specific number or many
monospermous1687
polyspermous1687
polysperm1729
dispermous1760
tetraspermous1760
trispermous1760
one-seededa1794
monosperm1838
dispermatous1854
monospermal1857
monospermatous1857
polyspermatous1858
tetraspermal1860
tetraspermatous1860
polyspermal1882
monospermic1891
1760 J. Lee Introd. Bot. ii. viii. 88 Monopetalous Tetraspermous.
Categories »
tetraspheric adj.
Brit. /ˌtɛtrəˈsfɛrɪk/
,
U.S. /ˌtɛtrəˈsfɛrɪk/
Mathematics of or pertaining to four spheres.
tetraspherical adj.
Brit. /ˌtɛtrəˈsfɛrᵻkl/
,
U.S. /ˌtɛtrəˈsfɪrək(ə)l/
,
/ˌtɛtrəˈsfɛrək(ə)l/
= tetraspheric adj.
tetrasymmetry n.
Brit. /ˌtɛtrəˈsɪmᵻtri/
,
U.S. /ˌtɛtrəˈsɪmətri/
Biology symmetry characterized by division into four similar parts.
ΘΚΠ
the world > life > biology > physical aspects or shapes > physical arrangement or condition > [noun] > symmetry
subequality1836
tetrapleuron1883
zygopleura1883
tetrasymmetry1889
1889 F. A. Bather in Q. Jrnl. Geol. Soc. 45 ii. 362 The structure above described for Eugeniacrinus is..also found..with the necessary modifications due to tetrasymmetry, in Tetracrinus.
† tetraˈsyncrasy n. Obsolete a mixture of four elements. [ < tetra- comb. form + ancient Greek σύγκρᾱσις (see idiosyncrasy n.).]
ΘΚΠ
the world > matter > chemistry > elements and compounds > [noun] > compounds > types > consisting of four elements
tetrasyncrasy1651
the world > life > the body > secretory organs > secretion > [noun] > fluid secretion > humours > combination of
complexion1393
crasis1602
temperament1628
tetrasyncrasy1651
1651 N. Biggs Matæotechnia Medicinæ Praxeωs §246 If they will have the pus to be made out of a Tetrasyncrasy or commixture of the humors.
tetrateuch n.
Brit. /ˈtɛtrətjuːk/
,
/ˈtɛtrətʃuːk/
,
U.S. /ˈtɛtrəˌt(j)uk/
a name for the first four books of the Pentateuch n.Apparently an isolated use.
[ < tetra- comb. form + -teuch comb. form.]
ΚΠ
1906 Rev. of Theol. & Philos. Jan. 457 An elaborate work on the Pentateuch (or rather the Tetrateuch, since Deuteronomy is lightly passed over).
tetrathecal adj.
Brit. /ˌtɛtrəˈθiːkl/
,
U.S. /ˌtɛtrəˈθik(ə)l/
Botany four-celled, as an ovary. [ < tetra- comb. form + ancient Greek θήκη case, cell (see theca n.) + -al suffix1.]
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > relating to or having ovule > of or having an ovary
gymnotetraspermous1736
ovarian1759
germinal1811
monocephalous1845
tetrathecal1849
basal1870
paragerminal1876
1849 J. H. Balfour Man. Bot. §405 A quadrilocular..or tetrathecal..anther.
1899 New Sydenham Soc. Lexicon Tetrathecal, Biol., applied to a four-chambered ovary.
tetratheism n.
Brit. /ˈtɛtrəˌθiːɪz(ə)m/
,
U.S. /ˈtɛtrəˌθiˌɪz(ə)m/
the doctrine of four persons in the Godhead.
tetratheite n.
Brit. /ˈtɛtrəˌθiːʌɪt/
,
U.S. /ˈtɛtrəˌθiˌaɪt/
a believer in tetratheism. [After post-classical Latin Tetratheitae, plural (1576 or earlier).]
ΘΚΠ
society > faith > sect > Christianity > Protestantism > Unitarianism > Antitrinitarian sects and groups > [noun] > Tetradite
Tetradite1728
Quaternitarian1829
tetratheite1874
1874 J. H. Blunt Dict. Sects at Damianists Their theory led to the conclusion that there are four Gods, the three separate and subordinate Hypostases and the one superior Αὐτόθεος, hence they were also named Tetratheites.
tetratone n.
Brit. /ˈtɛtrətəʊn/
,
U.S. /ˈtɛtrəˌtoʊn/
(also in form teˈtratonon) Music an interval containing four whole tones; an augmented fifth. [ < French tetratonon (1703 in the source translated in quot. 1740, or earlier) or its etymon Hellenistic Greek τετράτονον; compare post-classical Latin tetratonum (1501 or earlier).]
ΘΚΠ
society > leisure > the arts > music > musical sound > pitch > interval > [noun] > fifth > augmented fifth
tetratone1740
1740 J. Grassineau tr. S. De Brossard Musical Dict. 276 Tetratonon [Fr. tetratonon]; the superfluous fifth may be thus called, as containing four tones.
1775 J. Ash New Dict. Eng. Lang. Tetratonon, the superfluous fifth.
1801 in T. Busby Compl. Dict. Music
tetratop n.
Brit. /ˈtɛtrətɒp/
,
U.S. /ˈtɛtrəˌtɑp/
‘the four-dimensional angular space inclosed between four straight lines drawn from a point not in the same three-dimensional space’ ( Cent. Dict. 1891). [ < German Tetratop (1883 or earlier) < tetra- tetra- comb. form + ancient Greek τόπος place (see topos n.).]
tetrawickmanite n.
Brit. /ˌtɛtrəˈwɪkmənʌɪt/
,
U.S. /ˌtɛtrəˈwɪkməˌnaɪt/
Mineralogy a tetragonal polymorph of wickmanite, MnSn(OH)6, found as yellow crystals.
ΘΚΠ
the world > the earth > minerals > types of mineral > oxides and hydroxides > [noun] > hydroxides > others
gibbsite1822
pyrochroite1868
portlandite1933
hydrocalumite1934
nordstrandite1962
wickmanite1967
tetrawickmanite1973
1973 White & Nelen in Mineral. Rec. IV. 24/1 The mineral..was not wickmanite, but its tetragonal dimorph! To emphasize this dimorphic relationship the mineral has been named tetrawickmanite.
1978 Mineral Rec. IX. 41/2 The Langban tetrawickmanite occurs as bright yellow euhedra implanted on magnetite.
tetraxial adj.
Brit. /tᵻˈtraksɪəl/
,
/tɛˈtraksɪəl/
,
U.S. /təˈtræksiəl/
,
/tɛˈtræksiəl/
having four axes, as some sponge-spicules.
tetraxile adj.
Brit. /tᵻˈtraksʌɪl/
,
/tɛˈtraksʌɪl/
,
U.S. /təˈtrækˌsaɪl/
,
/tɛˈtrækˌsaɪl/
in same sense. [After German tetraxil (1870 or earlier).]
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having four axes
tetraxon1886
tetraxile1888
1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 810 Tetractina: spicules to a great extent tetraxile.
tetraxon n. and adj.
Brit. /tᵻˈtraksɒn/
,
/tɛˈtraksɒn/
,
U.S. /təˈtrækˌsɑn/
,
/tɛˈtrækˌsɑn/
(a) n. a sponge-spicule with four axes radiating from a centre; (b) adj. having four axes of growth. [ < tetra- comb. form + ancient Greek ἄξων axis (see axon n.).]
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having four axes
tetraxon1886
tetraxile1888
1886 Proc. Zool. Soc. 21 Dec. 581 Spicules more or less clearly tetraxon, often branched.
1887 W. J. Sollas in Encycl. Brit. XXII. 416/2 [article Sponges] Tetraxon Quadriradiate Type (Calthrops).—Growth from a centre in four directions inclined at about 110° to each other.
tetraxonian adj.
Brit. /ˌtɛtrakˈsəʊnɪən/
,
U.S. /ˌtɛtrækˈsoʊniən/
,
/ˌtɛtrækˈsoʊnjən/
= tetraxon n. and adj. (b).
tetrazomal adj. (and n.)
Brit. /ˌtɛtrəˈzəʊml/
,
U.S. /ˌtɛtrəˈzoʊm(ə)l/
Geometry applied to a curve having an equation of the form √U + √V + √W + √T = 0, in relation to which the four curves √U = 0, √V = 0, etc. have properties of the nature of girdling: cf. polyzome n. [ < tetra- comb. form + ancient Greek ζῶμα girdle (see diazoma n.) + -al suffix1.]
ΘΚΠ
the world > relative properties > number > geometry > curve > [noun] > other
quadratrix1656
section1665
family1705
semiparabola1728
tractrix1728
witcha1760
tractory1820
sinusoid1823
tractatrix1828
indicatrix1841
hodograph1847
tetrazomal1867
space curve1875
horograph1879
hypercycle1889
Peano curve1900
multiple arc1967
unknot1971
fractal1975
analemma1978
the world > relative properties > number > geometry > curve > [adjective] > other
caustic1728
hypotrochoidal1843
hodographic1847
Pippian1857
tetrazomal1867
trizomal1867
three-bar1875
sinusoidal1878
1867 A. Cayley Coll. Math. Papers VI. 485 On the Trizomal Curve and the Tetrazomal Curve.
1867 A. Cayley Coll. Math. Papers VI. 486 The tetrazomals are each of them a curve of the order 4r, and they intersect therefore in only 16r2 points.
Categories »
tetrazooid n.
Brit. /ˌtɛtrəˈzuːɔɪd/
,
/ˌtɛtrəˈzəʊɔɪd/
,
/ˌtɛtrəˈzuːɪd/
,
U.S. /ˌtɛtrəˈzoʊˌɔɪd/
,
/ˌtɛtrəˈzuˌɔɪd/
Biology any one of the four ascidiozooids developed from the germinal disk in the ascidian genus Pyrosoma ( Cent. Dict. Suppl. 1909).
2. In Chemistry nomenclature, in the names of compounds and derivatives with the general sense of ‘four-’, ‘four times’.
a. In substantives.
(a) Prefixed to names of binary compounds of elements or radicals, names of salts, etc., to signify four atoms, groups, or equivalents of the element or radical in question; as tetrachloride n. at sense 2a(c)(ii); so tetrasulphide, tetriodide, tetroxide n., tetrahydroxide, tetramethide, tetracetate, tetraphosphate, etc.
ΚΠ
1880 H. E. Roscoe & C. Schorlemmer Treat. Chem. II. ii. 434 Rhodium tetrahydroxide Rh(OH)4..this compound separates out as a green powder.
(b) Prefixed to names of elements or radicals (or the combining forms, as bromo-, nitro-, oxy-, phospho-, azo-) entering into the name of a compound, to signify that four atoms or groups of the element or radical are substituted in the substance designated by the rest of the name, as tetrabromobenzene, C6H2Br4, in which four of the hydrogen atoms of benzene, C6H6, are replaced by four bromine atoms; so tetramethylbenzene, C6H2(CH3)4.
(c)
(i) In some words used irregularly, as tetrasalicylide, C28H18O9: see quot. 1875 for tetrasalicylide n.
tetrasalicylide n.
Brit. /ˌtɛtrəˈsalᵻsəlʌɪd/
,
U.S. /ˌtɛtrəsəˈlɪsəˌlaɪd/
ΚΠ
1875 H. Watts Dict. Chem.: 2nd Suppl. 1067 Schiff..prepares salicylide, C7H4O2, and tetrasalicylide, C28H18O9, by the action of phosphorous oxychloride on salicylic acid.
(ii)
tetraalkyllead n.
Brit. /ˌtɛtrəalkʌɪlˈlɛd/
,
/ˌtɛtrəalkᵻlˈlɛd/
,
U.S. /ˌtɛtrəˌælkᵻlˈlɛd/
any compound in which the molecule consists of four alkyl radicals bonded to an atom of lead.
ΘΚΠ
the world > matter > chemistry > organic chemistry > organic radicals > [noun] > radical compounds (general)
telluride1832
hydroxide1851
oleic ether1854
organo-mercurial1858
triacetate1860
sulphone1872
sulphoxide1894
tetraalkyllead1923
organophosphate1945
1923 Jrnl. Amer. Chem. Soc. 45 1821 The method used by Krause..always yields a tetra-alkyl lead compound when an alkyl halide is used.
1978 Nature 26 Oct. 738/1 Particulate lead and tetraalkyllead in the atmosphere are due principally to emissions from vehicles fuelled by leaded petrol.
tetrabenazine n.
Brit. /ˌtɛtrəˈbɛnəziːn/
,
U.S. /ˌtɛtrəˈbɛnəˌzin/
Pharmacology a tricyclic compound, C19H27NO3, used in the treatment of chorea. [ < tetra- comb. form + benzo(a)quinolizin-2-one < ben- (in benzene n.) + -izine, denoting two fused rings with a nitrogen atom common to both.]
ΘΚΠ
the world > health and disease > healing > medicines or physic > medicines for specific purpose > sedatives, antispasmodics, etc. > [noun] > antispasmodic or anticonvulsant > specific substances or preparations
Dilantin1938
phenytoin1942
Artane1948
Mysoline1949
mephenesin1952
troxidone1952
primidone1953
acetazolamide1954
orphenadrine1957
tetrabenazine1958
ethosuximide1960
methsuximide1965
clonazepam1970
valproic1972
valproate1974
1958 Federation Proc. (Federation Amer. Soc. Exper. Biol.) 17 404/1 (heading) Inhibition of reserpine tranquilizing effects by tetra~benazine, a synthetic tranquilizing agent.
1974 Lancet 26 Jan. 107/1 Tetrabenazine is the drug of first choice for the suppression of chorea in patients with Huntington's chorea.
tetrabromide n.
Brit. /ˌtɛtrəˈbrəʊmʌɪd/
,
U.S. /ˌtɛtrəˈbroʊˌmaɪd/
ΚΠ
1880 Athenæum 11 Dec. 781/3 The Formation of Carbon Tetrabromide in the Manufacture of Bromine.
tetrabromobenzene n.
Brit. /ˌtɛtrəbrəʊmə(ʊ)ˈbɛnziːn/
,
/ˌtɛtrəbrəʊmə(ʊ)bɛnˈziːn/
,
U.S. /ˌtɛtrəˌbroʊmoʊˈbɛnˌzin/
,
/ˌtɛtrəˌbroʊmoʊˌbɛnˈzin/
ΚΠ
1888 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) I. 555 Tetrabromobenzene, C6H2Br4; from p-nitro-benzoic acid and Br at 280°.
tetracetate n.
Brit. /tɛˈtrasᵻteɪt/
,
U.S. /tɛˈtræsəˌteɪt/
ΚΠ
1900 Jrnl. Soc. Dyers & Colourists 16 7 The solutions of the tetracetate in chloroform.
tetrachlorethane n.
Brit. /ˌtɛtrəklɔːˈriːθeɪn/
,
U.S. /ˌtɛtrəˌklɔˈriˌθeɪn/
(also ˌtetrachloroˈethane) either of two isomeric compounds, C2H2Cl4, that are dense colourless liquids; spec. the symmetrical isomer, which is used chiefly in the manufacture of solvents and is toxic.
ΘΚΠ
the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > halogenated hydrocarbons > specific
tetrachlorethane1871
pentachloroethane1872
trichloroethylene1889
Freon1932
tetrafluoroethylene1933
fluorocarbon1937
perfluorocarbon1947
heptachlor1949
tetrachlorodibenzodioxin1959
TCDD1971
CFC1976
1871 Jrnl. Chem. Soc. 24 1191 The former has the composition of tetra~chlorethane, C2H2Cl4, and is formed, according to the usual reaction of phosphorus pentachloride on aldehydes, by the substitution of 2 at. Cl. for 1 at. O in dichloraldehyde.
1922 Encycl. Brit. XXX. 35/1 Tetrachlorethane was tried with success, but it proved dangerous to the operatives applying it in enclosed places. Moreover, sun~light decomposed tetrachlorethane.
1933 Jrnl. Royal Hort. Soc. 58 282 Tetrachlorethane as a Greenhouse Fumigant.
1934 H. Hiler Notes Technique Painting iii. 235 Dissolve hard copal resin in tetra-chlor-ethan [sic].
1963 A. J. Hall Student's Handbk. Textile Sci. vii. 307 Dry cleaning involves the extraction of dirt, and grease, oil, fat and wax stains from all kinds of textile materials by treatment with a hot organic solvent such as..tetrachloroethane.
1974 Encycl. Brit. Micropædia IX. 910/3 The other isomer, 1,1,1,2-tetrachloroethane,..has no commercial application.
tetrachloride n.
Brit. /ˌtɛtrəˈklɔːrʌɪd/
,
U.S. /ˌtɛtrəˈklɔˌraɪd/
a compound of four atoms of chlorine with some other element or radical; carbon tetrachloride, a dense, colourless liquid, CCl4, used chiefly in the manufacture of refrigerants and aerosols and in fire extinguishers, and also as a solvent.
ΘΚΠ
the world > matter > chemistry > chemical substances > salts > [noun] > salts named by atomic number > haloids > chlorides or chlorates > other specific named
sal ammoniacc1325
salt of steel1704
horn-lead1783
nitromuriate1796
oxymuriate1797
hyperoxymuriate1806
argentane1812
magnesane1812
tellurane1812
oxychlorate1818
hypochlorite1849
tin-salt1849
perchlorate1853
carbon tetrachloride1866
nickel chloride1868
opal blue1880
1866 W. Odling Lect. Animal Chem. 59 CCl4, Carbon tetrachloride.
1930 Engineering 26 Dec. 814/2 The use of chemical cleaners, such as..carbon tetrachloride,..is more effective.
1947 J. C. Rich Materials & Methods Sculpt. v. 94 The wax is placed in the carbon tetrachloride and set aside for about two days to dissolve, after which it can be used.
1972 Materials & Technol. IV. vi. 201 Carbon tetrachloride was originally made from coke and chlorine, carbon disulphide being used as an intermediate, but is now mainly produced by the chlorination of methane, or the chlorinolysis of higher hydrocarbons.
tetrachlorodibenzodioxin n.
Brit. /tɛtrəˌklɔːrə(ʊ)dʌɪbɛnzə(ʊ)dʌɪˈɒksɪn/
,
/tɛtrəˌklɒrə(ʊ)dʌɪbɛnzə(ʊ)dʌɪˈɒksɪn/
,
U.S. /ˌtɛtrəˌklɔroʊdaɪˌbɛnzoʊdaɪˈɑks(ə)n/
(also tetraˌchlorodiˌbenzoparadiˈoxin) (in strict technical use written with italic -p- in place of para), a polychlorinated tricyclic hydrocarbon, C12H4O2Cl4, that is carcinogenic and teratogenic in animals and is formed in the manufacture of chlorinated phenols; also called dioxin n.; abbreviated TCDD n. at T n. Initialisms 1a.
ΘΚΠ
the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > halogenated hydrocarbons > specific
tetrachlorethane1871
pentachloroethane1872
trichloroethylene1889
Freon1932
tetrafluoroethylene1933
fluorocarbon1937
perfluorocarbon1947
heptachlor1949
tetrachlorodibenzodioxin1959
TCDD1971
CFC1976
1959 Jrnl. Pharmaceut. Soc. Japan 79 188 (caption) 2,3,7,8-Tetrachlorodibenzo-p-dioxin.
1970 Kirk-Othmer Encycl. Chem. Technol. (ed. 2) XXII. 180 Dioxins, including 2,3,7,8-tetrachlorodibenzo-p-dioxin, have been detected as contaminants in samples of 2,4,5-T.
1976 Daily Tel. 2 Aug. 11/8 He is to attempt to clean an experimental patch of land 100 yards square by the introduction of healthy micro-organisms of yeast and mould, which he hopes will ‘seed’ upon the poisonous substance, breaking down the molecules of TCDD (Tetrachlorodibenzo-dioxine).
1977 New Yorker 25 July 30/1 The samples of the chemical used in the experiments had contained uncharacteristically high levels of a toxic contaminant, 2,3,7,8 tetrachlorodibenzo-p-dioxin—commonly referred to as TCDD, or, by chemists familiar with the subject, either as tetra dioxin or simply as dioxin.
1978 Price's Textbk. Pract. Med. (ed. 12) iii. 284/2 Under conditions of high reaction temperatures in the manufacture of 2,4,5-T there has been formed tetrachlorodibenzoparadioxine (dioxine) which has produced chloracne in laboratory workers.
1980 National Geographic Aug. 181 TCDD—shorthand for 2,3,7,8-tetra~chlorodibenzoparadioxin, frequently simply called dioxin—is the inevitable by-product of the manufacture of the herbicides 2,4,5-T and silvex.
tetradecapeptide n.
Brit. /ˌtɛtrədɛkəˈpɛptʌɪd/
,
U.S. /ˌtɛtrəˌdɛkəˈpɛpˌtaɪd/
a polypeptide having fourteen amino-acid residues in the molecule.
ΚΠ
1973 Science 5 Jan. 79/1 The linear tetra~decapeptide was synthesized by solid-phase methodology.
1979 Nature 8 Nov. 208/2 A tetradecapeptide originally isolated from amphibian skin.
tetraethylammonium n.
Brit. /tɛtrəˌiːθʌɪləˈməʊnɪəm/
,
/tɛtrəˌɛθʌɪləˈməʊnɪəm/
,
/tɛtrəˌɛθᵻləˈməʊnɪəm/
,
U.S. /ˌtɛtrəˌɛθələˈmoʊniəm/
(also †teˌtrethylaˈmmonium) Chemistry the quaternary ion (C2H5)4N+, which is a ganglion-blocking agent and has been used (in the form of its chloride or bromide salt) in the treatment of hypertension.
ΘΚΠ
the world > matter > chemistry > ions, ionization, or electrolysis > [noun] > ion > specific > specfic quaternary ion
tetraethylammonium1852
1852 A. W. Hofmann in Q. Jrnl. Chem. Soc. 4 306 For this [organic] metal I propose..the name Tetrethylammonium..which implies that it is built up by the intimate union of nitrogen with four equivalents of the hypothetical hydrocarbon called ethyl.
1940 Thorpe's Dict. Appl. Chem. (ed. 4) IV. 355/2 Tetraethylammonium hydroxide, NEt4·OH, known only in solution or as solid hydrates.
1962 J. H. Burn Drugs, Med. & Man vi. 65 Two American workers attempted to use..tetraethylammonium to reduce blood pressure in patients in 1946, and then two workers in England introduced hexamethonium which was much more powerful and acted for a much longer time.
tetraethyl lead n.
Brit. /ˌtɛtrəiːθʌɪl ˈlɛd/
,
/ˌtɛtrəɛθʌɪl ˈlɛd/
,
/ˌtɛtrəɛθᵻl ˈlɛd/
,
U.S. /ˌtɛtrəˌɛθ(ə)l ˈlɛd/
a poisonous oily liquid, Pb(C2H5)4, which is added to petrol as an anti-knock agent making possible higher compression ratios; = lead tetraethyl n. at lead n.1 Compounds 3b. [Compare French plomb tétraéthyle (1893 or earlier).]
ΘΚΠ
the world > matter > chemistry > elements and compounds > metals > specific elements > lead > [noun] > compounds > others
litharge of goldc1400
red leadc1450
tetraethyl lead1923
plumbane1950
1923 Jrnl. Amer. Chem. Soc. 45 1821 Tetra-ethyl lead was prepared by P. Pfeiffer by the action of lead chloride on ethyl-magnesium iodide.
1940 Economist 30 Mar. 586/2 The 87-octane spirit is generally obtained by the addition of small quantities of tetra-ethyl lead to good-quality ‘straight-run’ petrol.
1970 Nature 14 Mar. 990/1 Lead, in the form which it is added to petrols—tetraethyl lead, Pb(C2H5)4—is undoubtedly poisonous.
tetraethylpyrophosphate n.
Brit. /tɛtrəˌiːθʌɪlpʌɪrə(ʊ)ˈfɒsfeɪt/
,
/tɛtrəˌɛθʌɪlpʌɪrə(ʊ)ˈfɒsfeɪt/
,
/tɛtrəˌɛθᵻlpʌɪrə(ʊ)ˈfɒsfeɪt/
,
U.S. /ˌtɛtrəˌɛθəlˌpaɪroʊˈfɑsˌfeɪt/
a colourless, hygroscopic liquid, (C2H5)4P2O7, that is a cholinesterase inhibitor and is used as a garden insecticide and formerly to relieve the symptoms of myasthenia gravis.
ΘΚΠ
the world > matter > chemistry > organic chemistry > organic salts > [noun] > miscellaneous others
alum zucarinea1425
white precipitate1588
volatile salt or salts1639
malate1788
oxalate1788
sebate1788
succinate1789
camphorate1800
suberate1800
tannate1802
formate1807
zymate1817
uranate1819
ambreate1820
fungate1821
hydriodide1823
sorbate1823
fulminate1824
uraniate1824
pinate1829
oleate1831
pectate1831
resinate1831
xanthate1831
formobenzoate1834
racemate1835
indigotate1838
japonate1838
oxalhydrate1838
oxalovinate1838
palmate1838
pyruvate1838
roccellate1838
rubinate1838
verdite1838
oxalurate1839
sesquisalt1839
palmitate1840
rhabarbarate1840
hippurate1841
palmitin1841
sericate1841
stearate1841
oenanthylate1843
humate1844
parabanate1844
urethylane1844
angelate1846
fungiate1847
nitroprusside1849
sodium nitroprusside1849
fulminurate1855
igasurate1855
inosinate1855
phenate1857
sinapate1857
styphnate1857
anchoate1858
parellate1858
toluate1860
piperate1862
fumarate1864
glycollate1864
hydurilate1865
hyoglycocholate1865
isamates1865
itaconates1865–72
paralactate1866
porphyrate1866
usnate1866
thebolactate1867
oxalonitrate1868
rhodanate1868
stearerate1868
terebate1868
terephthalate1868
thymotate1868
turpetholate1868
violurate1868
viridate1868
xanthide1868
glycocholate1872
xylate1872
xylidate1872
tiglate1875
peptonate1876
hydracrylate1877
thymolate1880
formamidine1882
carboxylate1884
nucleate1896
phytin1905
cacodylate1908
cupferron1910
protamine sulphate1915
metallic soap1918
pentaerythritol tetranitrate1923
phosphagen1927
phosphocreatine1927
viologen1933
pentachlorophenate1938
hyaluronate1946
tetraethylpyrophosphate1947
pteroylglutamate1948
inosate-
1947 Nature 29 Nov. 760/1 During the War, the Germans introduced as insecticides a series of phosphate esters, including tetraethylpyrophosphate and hexaethyltetraphosphate.
1952 H. Beckman Pharmacol. in Clin. Pract. 568 Prostigmin may usually be discontinued at this point and tetraethylpyrophosphate cautiously increased..until there is maximal relief of symptoms without toxic effects.
1974 Encycl. Brit. Micropædia IX. 911/3 Tetraethyl pyro~phosphate is extremely poisonous to humans, the toxic effects being similar to those of parathion.
tetrafluoride n.
Brit. /ˌtɛtrəˈflʊərʌɪd/
,
/ˌtɛtrəˈflɔːrʌɪd/
,
U.S. /ˌtɛtrəˈflʊˌraɪd/
,
/ˌtɛtrəˈflɔˌraɪd/
ΚΠ
1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xi. 121 Fluorine forms, with the silicon contained in the glass, a volatile compound called Silicon tetrafluoride.
tetrahydrate n.
Brit. /ˌtɛtrəˈhʌɪdreɪt/
,
U.S. /ˌtɛtrəˈhaɪˌdreɪt/
a hydrate containing four molecules of water.
ΘΚΠ
the world > matter > chemistry > chemical substances > named compounds > [noun] > water > compounds of hydrates > by number of water molecules
pentahydrate1842
trihydrate1854
tetrahydrate1886
1886 Jrnl. Chem. Soc. 49 418 The thermal reaction..is made up of two distinct quantities—(1) the decomposition of the trihydrate, (2) the formation of the tetrahydrate.
1951 C. Palache et al. Dana's Syst. Mineral. (ed. 7) II. 493 [Pentahydrite is] obtained in crystals together with the hexahydrate and tetrahydrate by evaporation..of a solution of magnesium sulfate.
1963 Acta Crystallogr. 16 376 (heading) Refinement of the structure of potassium pentaborate tetrahydrate.
tetrahydrocannabinol n.
Brit. /ˌtɛtrəhʌɪdrə(ʊ)ˈkanəbᵻnɒl/
,
U.S. /ˌtɛtrəˌhaɪdroʊkəˈnæbəˌnɔl/
,
/ˌtɛtrəˌhaɪdroʊkəˈnæbəˌnɑl/
a hydrogenated derivative of cannabinol that is the active principle in cannabis and hashish.
ΚΠ
1940 Jrnl. Chem. Soc. 1121 The compounds prepared include 6″-hydroxy-2:2:5′-trimethyl-4″-n-amyl-3′:4′:5′:6′-tetrahydrodibenzopyran.., which may be a tetrahydrocannabinol.
1967 New Scientist 31 Aug. 436/1 The classical analysis of hashish..yielded three types of related compound as the characteristic components of the drug. These were cannabidiol, cannabinol and tetrahydrocannabinol.
1980 Daily Tel. 19 Sept. 11/2 If the female is pollinated, it uses some of its resinous tetrahydrocannabinol [printed -cannibol]—the stimulant in marijuana—to produce seeds.
tetrahydrofuran n.
Brit. /ˌtɛtrəhʌɪdrə(ʊ)ˈfjʊəran/
,
U.S. /ˌtɛtrəˌhaɪdroʊˈf(j)ʊˌræn/
a colourless liquid, C4H8O, used as a solvent for plastics and other polymers and as an intermediate in the manufacture of organic chemicals.
ΘΚΠ
the world > matter > chemistry > organic chemistry > organic compounds > [noun] > cyclic compounds > named
trioxymethylene1880
triazole1888
tetrahydrofuran1908
1908 Jrnl. Chem. Soc. 94 i. 280 When furan is hydrogenated at 170° by Sabatier and Senderens' method, the principal product consists of tetrahydrofuran.
1956 Nature 21 Jan. 128/2 Both the nylon 6:6-cyclic monomer..and the cyclic dimer from caprolactam..were reduced by lithium aluminium hydride in boiling tetrahydrofuran without difficulty.
1978 Further Perspectives Organic Chem. (CIBA) 23 Why should the gas phase be a better model for enzymic reactions than a solvent which is more protein-like than, say, water..or tetrahydrofuran?
tetrahydrofurfuryl n.
Brit. /ˌtɛtrəhʌɪdrə(ʊ)ˈfəːfjᵿrɪl/
,
/ˌtɛtrəhʌɪdrə(ʊ)ˈfəːfjᵿrʌɪl/
,
U.S. /ˌtɛtrəˌhaɪdroʊˈfərf(j)ərəl/
the monovalent radical C4H7O.CH2—.
ΘΚΠ
the world > matter > chemistry > organic chemistry > organic radicals > [noun] > monovalent radicals
phenyl1849
acetyl1864
tetrahydrofurfuryl1928
ribityl1935
hydroxymethyl1937
tosyl1938
phosphatidyl1941
1928 Jrnl. Amer. Chem. Soc. 50 1821 α-Tetrahydrofurfuryl alcohol will shortly be available on a commercial scale from the catalytic reduction of furfural.
1951 R. E. Kirk & D. F. Othmer Encycl. Chem. Technol. VI. 1004 In the United Kingdom, tetrahydrofurfuryl acetate has been used as a lipstick ingredient, based on the high solubility of eosin in it.
1951 R. E. Kirk & D. F. Othmer Encycl. Chem. Technol. VI. 1004 Tetrahydrofurfuryl alcohol is used in the preparation of esters, especially tetrahydrofurfuryl oleate, which is almost colourless and has excellent light and heat stability.
tetrahydronaphthalene n.
Brit. /ˌtɛtrəhʌɪdrə(ʊ)ˈnafθəliːn/
,
/ˌtɛtrəhʌɪdrə(ʊ)ˈnapθəliːn/
,
U.S. /ˌtɛtrəˌhaɪdroʊˈnæpθəˌlin/
,
/ˌtɛtrəˌhaɪdroʊˈnæfθəˌlin/
any compound derived from naphthalene by the addition of four hydrogen atoms; spec. 1,2,3,4-tetrahydronaphthalene, a colourless liquid used as a solvent for hydrocarbons, esp. varnishes, lacquers, etc.; = Tetralin n. [Compare French tétrahydronaphtalène (1893 or earlier).]
ΘΚΠ
the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > hydrocarbon mixtures
idryl1845
naphtha1846
tetrahydronaphthalene1887
Tetralin1920
synthol1924
1887 Abstr. Proc. Chem. Soc. 3 88 At the next meeting..the following Papers will be read... ‘Derivatives of Hydrindonaphthene and Tetrahydronaphthalene’. By W. H. Perkin, jun.
1904 Jrnl. Chem. Soc. 86 i. 987 Decahydronaphthalene, C10H18, obtained by hydrogenating tetrahydronaphthalene at 175°, is a colourless liquid with an odour of menthol.
1935 Industr. & Engin. Chem. (News ed.) 20 Aug. 332/1 The merit of tetrahydronaphthalene for town gas mains lies in the fact that, being a close chemical relative of naphthalene it has the power of absorbing larger quantities of naphthalene than any of the other solvents in present use.
1964 N. G. Clark Mod. Org. Chem. xix. 391 Naphthalene quite readily undergoes addition reactions. For example at 200° catalytic hydrogenation over nickel yields tetrahydronaphthalene (‘tetralin’).
1969 N. A. J. Rogers in S. Coffey Rodd's Chem. Carbon Compounds (ed. 2) IIc. x. 71 1,4,5,8-Tetrahydronaphthalene, ‘isotetralin’.., m.p. 58°, may be prepared by the reduction of 1,4-dihydronaphthalene by the ‘metal in ammonia’ method.
tetraiodothyronine n.
Brit. /ˌtɛtrəʌɪədə(ʊ)ˈθʌɪrəniːn/
,
/ˌtɛtrəʌɪədə(ʊ)ˈθʌɪrənɪn/
,
U.S. /ˌtɛtrəˌaɪədoʊˈθaɪrəˌnin/
,
/ˌtɛtrəˌaɪədoʊˈθaɪrənən/
Biochemistry = thyroxine n.
ΚΠ
1928 C. R. Harington in Biochem. Jrnl. XXII. 1430 In order to lessen the clumsiness of the systematic nomenclature of thyroxine derivatives it is proposed to call the amino-acid, desiodothyroxine, ‘thyronine’..so that thyroxine would be ‘3:5:3′:5′-tetraiodothyronine’.
1974 D. Webster & M. Webster Compar. Vertebr. Morphol. xiii. 310 The two hormones, triiodothyronine and tetraiodothyronine (thyroxine), are iodinated amino acids.
tetramethide n.
Brit. /ˌtɛtrəˈmɛθʌɪd/
,
/ˌtɛtrəˈmiːθʌɪd/
,
U.S. /ˌtɛtrəˈmɛˌθaɪd/
ΚΠ
1899 E. F. Smith tr. V. von Richter Org. Chem. (ed. 3) I. 187 Lead tetramethide, Pb(CH3)4, boils at 110°.
tetramethylene n.
Brit. /ˌtɛtrəˈmɛθᵻliːn/
,
U.S. /ˌtɛtrəˈmɛθəˌlin/
the gaseous alicyclic compound (CH2)4; also, (a compound containing) the bivalent straight-chain radical —CH2(CH2)2CH2—.
ΘΚΠ
the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > cyclic hydrocarbons > others
heveëne1838
menthene1838
carotene1861
stilbene1868
mesityl1879
naphthene1884
tetramethylene1885
hexamethylene1887
pentamethylene1887
irene1894
pregnane1932
adamantane1933
aldrin1949
sterane1951
norbornane1952
1885 W. H. Perkin in Jrnl. Chem. Soc. 47 806 It was thought that the simplest method would be to regard the saturated hydrocarbons themselves as multiples of methylene, CH2, and thus name them di-, tri-, tetra-, penta-, &c., methylene, as is easiest seen from the following table:—..Tetra-methylene.
1898 J. Wade Introd. Study Org. Chem. xxxv. 219 The tetramethylene compound..is formed by the reduction of ethylene cyanide with sodium amalgam in alcoholic solution.
1909 C. A. Keane Mod. Org. Chem. v. 63 The simplest cyclic compounds containing four and five carbon atoms are the hydrocarbons tetramethylene, C4C8, and pentamethylene, C5H10.
1944 S. J. Smith Princ. Org. Chem. x. 197 Both their methods of preparation and their parachors..show them to be cyclic compounds containing no unsaturated linkage:..Cyclobutane tetramethylene.
1966 Nomencl. Org. Chem.: A & B (I.U.P.A.C.) (ed. 2) 16 The names of bivalent radicals derived from normal alkanes by removal of a hydrogen atom from each of the two terminal carbon atoms of the chain are ethylene, trimethylene, tetramethylene, etc.
1971 N. L. Allinger et al. Org. Chem. iv. 63 Frequently occurring hydrocarbon groupings that have more than one site for the attachment of substituents are also given common or trivial names..ICH2CH2CH2CH2I 1,4-Diiodobutane (Tetra~methylene iodide).
tetramisole n.
Brit. /tᵻˈtramᵻsəʊl/
,
/tɛˈtramᵻsəʊl/
,
U.S. /təˈtræməˌsoʊl/
,
/tɛˈtræməˌsoʊl/
Pharmacology an anthelmintic drug used in man and animals, usually as the hydrochloride, 2,3,5,6-tetrahydro-6-phenylimidazo[2,1-b]thiazole, C11H12N2S. [ < tetra- comb. form + -mi- (in imide n.) + -zole (in thiazole n. at thio- comb. form 1), with alteration of z to s.]
ΘΚΠ
the world > health and disease > healing > medicines or physic > medicines for specific purpose > remedies for parasitic infections > [noun] > vermifuge or anthelminthic > others
brayera1875
piperazine1889
piperazidine1891
hexylresorcinol1924
thiabendazole1961
niridazole1966
tetramisole1966
mebendazole1971
oxamniquine1972
albendazole1976
1966 D. Thienpont et al. in Nature 12 Mar. 1084/1 This article reports the discovery of tetra~misole.., a new, potent broad spectrum anthelmintic.
1978 Nature 22 June 629/1 Tetramisole and/or its levorotatory isomer levamisole is used in many countries against a broad range of nematodal infections in birds, pigs, ruminants and man.
tetrapeptide n.
Brit. /ˌtɛtrəˈpɛptʌɪd/
,
U.S. /ˌtɛtrəˈpɛpˌtaɪd/
Biochemistry an oligopeptide in which there are four amino-acid residues in the molecule. [ < German Tetrapeptid (1905 or earlier) < tetra- tetra- comb. form + Peptid (see peptide n.).]
ΚΠ
1906 Jrnl. Chem. Soc. 90 i. 810 Triglycylglycine methyl ester, prepared by esterifying the tetra~peptide with methyl alcohol and hydrogen chloride, crystallises in microscopic, glistening needles.
1927 P. A. Levene Chem. Relationships of Sugars 2 in Contemp. Devel. in Chem. A tetrapeptide composed of naturally occurring amino acids is hydrolyzed by trypsin.
1970 R. W. McGilvery Biochemistry iv. 51 Peptide subunits join to make the tetrapeptide because of interactions between side chains of residues exposed at the meshing surfaces.
tetraphenol n.
Brit. /ˌtɛtrəˈfiːnɒl/
,
U.S. /ˌtɛtrəˈfiˌnɔl/
,
/ˌtɛtrəˈfiˌnɑl/
ΚΠ
1875 H. Watts Dict. Chem.: 2nd Suppl. 1032 When the barium salt [of pyromucic acid] mixed with soda~lime is heated, a compound called tetraphenol, C4H4O, distils over.
tetrapyrrole n.
Brit. /ˌtɛtrəˈpɪrəʊl/
,
U.S. /ˌtɛtrəˈpɪˌroʊl/
any compound containing four pyrrole nuclei, esp. when in the form of a ring (cf. porphin n.).
ΘΚΠ
the world > matter > chemistry > organic chemistry > organic compounds > [noun] > heterocyclic compounds > containing nitrogen > pyrrole > tetrapyrrole
tetrapyrrole1917
1917 Chem. Abstr. 11 452 Baeyer's method..gives the cryst[alline] substance C28H36N4..which may be named tetrapyrroletetracetone.
1968 A. Albert Heterocyclic Chem. (ed. 2) v. 234 Pyrroles are well represented in Nature. Apart from the many porphins and related tetrapyrroles.., there is the bacterial pigment prodigiosin, and the antibiotic netropsin.
1976 Ann. Rev. Microbiol. 30 410 Relatively general metabolic criteria, such as..tetra~pyrrole biosynthesis..have proven useful in defining taxonomic relationships.
tetrapyrrolic adj.
Brit. /ˌtɛtrəpᵻˈrɒlɪk/
,
U.S. /ˌtɛtrəpəˈrɑlɪk/
ΘΚΠ
the world > matter > chemistry > organic chemistry > organic compounds > [adjective] > heterocyclic compounds > containing nitrogen
melamine1835
tetrapyrrolic1944
nitron1971
1944 Ann. Reg. 1943 358 Vitamins operate as coenzymes in plant respiration, which is catalysed by the same types of tetrapyrrolic compounds as are present in animal tissues.
1975 Nature 22 May 357/2 The Hans Fischer school which then dominated tetrapyrrolic chemistry.
b. Prefixed to adjectives, in the names of acids, alcohols, aldehydes, ethers, salts, etc.; as tetrasodic, containing four sodium atoms; so tetraboric, etc.; tetrethylic, containing four ethyl groups; so tetramylic, etc.
ΚΠ
1868 H. Watts Dict. Chem. V. 730 Tetraphosphamic acids..are amic acids derived from tetraphosphoric acid.
1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 347 Tetrasodic Phosphate or Sodium Pyrophosphate..is prepared by strongly heating common disodic orthophosphate..and re-crystallizing.
1888 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) I. 528 Pyroboric (or tetraboric) acid, 2B2O3·H2O (= H2B4O7).
c. In verbs and their participles derived from nouns as in 2a, as tetrabrominated, tetrachlorinated, tetrahydrated (containing 4 molecules of water).
ΚΠ
1857 W. A. Miller Elements Chem. III. 46 Tetrachlorinated Hydrochloric Ether, C4HCl.Cl4.
1873 H. Watts Fownes's Man. Elem. Chem. (ed. 11) 767 Propyl-benzene..forms with excess of bromine a viscid tetrabrominated compound.
This entry has not yet been fully updated (first published 1911; most recently modified version published online March 2022).
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