tachy-comb. form
Used in the formation of some scientific terms.
tachhydrite n.
Brit. 
/takˈhʌɪdrʌɪt/
, /takˈhʌɪdrʌɪt/U.S. /tækˈhaɪˌdraɪt/
(also tachydrite) Mineralogy a chloride of calcium and magnesium found at Stassfurt in Prussian Saxony. [After German Tachhydrit (Rammelsberg 1856) < tachy- tachy- comb. form + ancient Greek ὕδωρ water (see hydro- comb. form) + German -it -ite suffix1; so called from its property of deliquescing readily.] /tækˈhaɪˌdraɪt/ΘΚΠ
the world > the earth > minerals > types of mineral > halides > [noun] > fluorite group > others
Blue John1768
tachhydrite1866
carnallite1876
nocerite1882
terlinguaite1900
jarlite1933
1866 W. T. Brande & G. W. Cox Dict. Sci., Lit. & Art (new ed.) II. 532/3 Tachydrite.
1868 J. D. Dana Syst. Mineral. (ed. 5) 119 Tachhydrite... Color yellowish. Transparent to translucent. Very deliquescent on exposure.
tachydidaxy n. /ˈtakᵻdᵻˌdaksi/, /ˈtækəˌdaɪˌdæksi/ see quot. [ < tachy- comb. form + ancient Greek δίδαξις teaching < δίδακτος taught (see didactic n.) + -σις -sis suffix.]
Brit. /ˈtakᵻdʌɪˌdaksi/
, /ˈtakᵻdʌɪˌdaksi//ˈtakᵻdᵻˌdaksi/U.S. /ˈtækədᵻˌdæksi/
, /ˈtækədᵻˌdæksi//ˈtækəˌdaɪˌdæksi/ΘΚΠ
society > education > teaching > [noun] > other methods of teaching
demonstration1742
bear-leading1766
royal road1793
tachydidaxy1846
object teaching1851
object system1862
methodic1864
community education1873
methodics1883
maieutics1885
type-system1901
direct method1904
spoon-feeding1905
play method1914
playway1914
project method1916
active learning1919
study skills1924
skit1926
free activity1929
hypnopaedia1932
sleep-teaching1932
chalk and talk1937
show-and-tell1941
demo1945
naming of (the) parts1946
team teaching1949
teleteaching1953
programming1954
audio-lingualism1961
immersion1965
dem1968
open learning1970
suggestopaedia1970
suggestopedy1970
distance learning1972
fast-tracking1972
paideia1982
tutorial1984
m-learning2001
1846 J. E. Worcester Universal Dict. Eng. Lang. Tachydidaxy, a short method of teaching.
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tachydrome n.
Brit. /ˈtakᵻdrəʊm/
, /ˈtakᵻdrəʊm/U.S. /ˈtækəˌdroʊm/
anglicized form of Tachydromus, Illiger's name for the ornithological genus Cursorius, a small group of birds allied to the Plovers; = courser n.3 [After scientific Latin Tachydromus (Illiger, 1811) < Hellenistic Greek ταχυδρόμος fast-running < ancient Greek ταχυ- tachy- comb. form + -δρομος -drome comb. form.] /ˈtækəˌdroʊm/ tachydromian n.
Brit. /ˌtakᵻˈdrəʊmɪən/
, /ˌtakᵻˈdrəʊmɪən/U.S. /ˌtækəˈdroʊmiən/
a bird of this group./ˌtækəˈdroʊmiən/ΘΚΠ
the world > animals > birds > order Charadriiformes > [noun] > family Glareolidae > member of genus Cursorius (courser)
courser1812
tachydromian1842
tachydrome-
1842 W. T. Brande Dict. Sci., Lit. & Art 1204/2 Tachydromians, Tachydromii, the name of a family of wading birds, of which the genus Tachydromus is the type.
tachydromous adj. /təˈkɪdrəməs/, /təˈkɪdrəməs/ of the tachydromes; cursorial.
Brit. /taˈkɪdrəməs/
, /taˈkɪdrəməs//təˈkɪdrəməs/U.S. /tæˈkɪdrəməs/
, /tæˈkɪdrəməs//təˈkɪdrəməs/ΘΚΠ
the world > animals > birds > order Charadriiformes > [adjective] > of the courser
tachydromous1860
1860 R. G. Mayne Expos. Lexicon Med. Sci. 1247/1 Having the Tachydromus for their type: tachydromous.
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tachygen n. /ˈtakᵻdʒ(ə)n/, /ˈtækədʒən/ Biology the sudden appearance of an organ in evolution; the part so appearing (Webster Suppl. 1902). [ < tachy- comb. form + -gen comb. form.]
Brit. /ˈtakᵻdʒɛn/
, /ˈtakᵻdʒɛn//ˈtakᵻdʒ(ə)n/U.S. /ˈtækəˌdʒɛn/
, /ˈtækəˌdʒɛn//ˈtækədʒən/ tachygenesis n.
Brit. /ˌtakᵻˈdʒɛnᵻsɪs/
, /ˌtakᵻˈdʒɛnᵻsɪs/U.S. /ˌtækəˈdʒɛnəsəs/
acceleration in development by the shortening or suppression of intervening stages. [ < tachy- comb. form + -genesis comb. form.] /ˌtækəˈdʒɛnəsəs/ΘΚΠ
the world > life > biology > biological processes > evolution > [noun] > processes or types of evolution
transmutation1626
substitution1822
subspeciation1826
metamorphosis1835
phytogenesis1847
phytogeny1850
anamorphosis1852
correlation1859
advergence1861
convergence1861
phylogeny1869
ontogeny1872
recapitulation1874
ontogenesis1875
phylogenesis1875
biogenesis1876
abiogenesis1884
anagenesis1889
tachygenesis1893
orthogenesis1895
adaptive radiation1898
speciation1906
microevolution1911
subspeciation1921
raciation1934
orthogenetics1937
encephalization1938
proterogenesis1938
allomorphosis1941
cladogenesis1953
Wallace effect1966
metachromism1968
punctuation1976
speciational evolution1988
tachygen-
1893 Hyatt in Proc. Boston Soc. Nat. Hist. 26 77 Thus, from Cope's point of view, tachygenesis is the law of progression, and retardation is the law of retrogression, and they are both essential parts of his law of acceleration and retardation.
tachygenetic adj.
Brit. /ˌtakᵻdʒᵻˈnɛtɪk/
, /ˌtakᵻdʒᵻˈnɛtɪk/U.S. /ˌtækədʒəˈnɛdɪk/
of or exhibiting tachygenesis./ˌtækədʒəˈnɛdɪk/ΘΚΠ
the world > life > biology > biological processes > evolution > [adjective] > processes or types of evolution
high?1548
recapitulative1836
retrogressive1853
transmutational1861
ontogenetic1869
convergent1871
phylogenetic1876
correlative1877
ontogenic1878
phylogenetical1879
phytogenetic1882
monotypic1888
phytogenetical1888
polytypic1888
ontogenal1890
phylogenal1890
recapitulatory1890
tachygenetic1893
ontogenetical1894
anagenetic1896
orthogenic1896
orthogenetic1899
macroevolutionary1937
microevolutionary1937
proterogenetic1938
speciational1944
parapatric1953
cladogenetic1957
allochronic1960
stasigenetic1965
stasipatric1967
speciating1970
punctuational1976
tachygenic-
1893 Hyatt in Proc. Boston Soc. Nat. Hist. 26 79 Normal types in which tachygenesis occurs in a marked way might be called tachygenetic.
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tachygenic adj.
Brit. /ˌtakᵻˈdʒɛnɪk/
, /ˌtakᵻˈdʒɛnɪk/U.S. /ˌtækəˈdʒɛnɪk/
appearing or developing suddenly (Webster Suppl. 1902)./ˌtækəˈdʒɛnɪk/ tachyglossal adj. /ˌtækəˈɡlɑs(ə)l/ Zoology of a tongue: capable of being quickly thrust forth and retracted, as that of the ant-eater.
Brit. /ˌtakᵻˈɡlɒsl/
, /ˌtakᵻˈɡlɒsl/U.S. /ˌtækəˈɡlɔs(ə)l/
, /ˌtækəˈɡlɔs(ə)l//ˌtækəˈɡlɑs(ə)l/ΘΚΠ
the world > animals > mammals > group Implacenta > [adjective] > having retractable tongue
tachyglossal1891
tachyglossate1891
1891 Cent. Dict. Tachyglossal, Tachyglossate.
tachyglossate adj. /ˌtakᵻˈɡlɒseɪt/, /ˌtækəˈɡlɑsət/, /ˌtækəˈɡlɔˌseɪt/, /ˌtækəˈɡlɑˌseɪt/ having a tachyglossal tongue; pertaining to the Tachyglossidæ, a family of aculeate monotrematous mammals, of which the typical genus Tachyglossus contains the Echidna or porcupine ant-eater of Australia. [After scientific Latin Tachyglossus, genus name (Illiger, 1811) < ancient Greek ταχύγλωσσος fast-talking < ταχυ- tachy- comb. form + γλῶσσα tongue (see gloss n.1).]
Brit. /ˌtakᵻˈɡlɒsət/
, /ˌtakᵻˈɡlɒsət//ˌtakᵻˈɡlɒseɪt/U.S. /ˌtækəˈɡlɔsət/
, /ˌtækəˈɡlɔsət//ˌtækəˈɡlɑsət//ˌtækəˈɡlɔˌseɪt//ˌtækəˈɡlɑˌseɪt/ΘΚΠ
the world > animals > mammals > group Implacenta > [adjective] > having retractable tongue
tachyglossal1891
tachyglossate1891
1891 Cent. Dict. Tachyglossal, Tachyglossate.
tachyglossid n. /ˌtækəˈɡlɑsəd/ an animal of this family. [Compare scientific Latin tachyglossidae (1872 or earlier).]
Brit. /ˌtakᵻˈɡlɒsɪd/
, /ˌtakᵻˈɡlɒsɪd/U.S. /ˌtækəˈɡlɔsəd/
, /ˌtækəˈɡlɔsəd//ˌtækəˈɡlɑsəd/Thesaurus »
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tachyiater n.
Brit. /ˌtakɪˈʌɪətə/
, /ˌtakɪˈʌɪətə/U.S. /ˌtækiˈaɪədər/
‘one who cures speedily’ ( New Sydenham Soc. Lexicon 1898). [Compare scientific Latin tachyiatrus (1844 or earlier), ancient Greek ἰατρός healer (see iatro- comb. form).] /ˌtækiˈaɪədər/Thesaurus »
Categories »
tachyiatry n.
Brit. /ˌtakɪˈʌɪətri/
, /ˌtakɪˈʌɪətri/U.S. /ˌtækiˈaɪətri/
the art of quick healing ( New Sydenham Soc. Lexicon). [Compare scientific Latin tachyiatria (1844 or earlier), German Tachyiatrie (1844 or earlier), French tachyiatrie (1860 or earlier).] /ˌtækiˈaɪətri/ tachymetabolic adj.
Brit. /ˌtakᵻmɛtəˈbɒlɪk/
, /ˌtakᵻmɛtəˈbɒlɪk/U.S. /ˌtækəˌmɛdəˈbɑlɪk/
/ˌtækəˌmɛdəˈbɑlɪk/ΘΚΠ
the world > animals > animal body > general parts > internal organs and systems > [adjective] > relating to thermogenesis > warm-blooded
homoeothermal1870
homothermous1881
stenothermal1881
homoeothermic1889
homothermic1890
endothermic1946
tachymetabolic1974
1974 Nature 13 Sept. 143/2 Already at this early age the dog is tachymetabolic.
1978 Nature 5 Oct. 441/1 The central nervous system (CNS) is very sensitive to elevated temperatures, and consequently, both bradymetabolic and tachymetabolic terrestrial vertebrates have evolved physiological mechanisms which effect localised cooling of the brain.
tachymetabolism n.
Brit. /ˌtakᵻmᵻˈtabəlɪz(ə)m/
, /ˌtakᵻmᵻˈtabəlɪz(ə)m/U.S. /ˌtækəməˈtæbəˌlɪz(ə)m/
Zoology (see quot. 1973)./ˌtækəməˈtæbəˌlɪz(ə)m/ΘΚΠ
the world > animals > animal body > general parts > internal organs and systems > [noun] > thermogenesis > warm-blooded
endothermy1949
tachymetabolism1973
1973 Bligh & Johnson in Jrnl. Appl. Physiol. XXXV. 954/2 Tachymetabolism: The high level of basal metabolism of birds and mammals relative to those of reptiles and other nonavian and nonmammalian animals of the same body weight and at the same tissue temperature... Synonym: Warm-Blooded. Antonym: Bradymetabolism, Cold-Blooded.
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tachypetous adj. /təˈkɪpᵻtəs/, /təˈkɪpədəs/ swift-flying (Mayne Expos. Lexicon Med. Sci. 1860). [Compare scientific Latin Tachypetes , genus name (1816) < Byzantine Greek ταχυπέτης flying fast < ancient Greek ταχυ- tachy- comb. form + πετ- , stem of πέτεσθαι to fly (see feather n.).]
Brit. /taˈkɪpᵻtəs/
, /taˈkɪpᵻtəs//təˈkɪpᵻtəs/U.S. /tæˈkɪpədəs/
, /tæˈkɪpədəs//təˈkɪpədəs/ tachyphylaxis n.
Brit. /ˌtakᵻfᵻˈlaksɪs/
, /ˌtakᵻfᵻˈlaksɪs/U.S. /ˌtækəfəˈlæksəs/
Pharmacology a rapidly diminishing response to successive doses of a drug. [After French tachyphylaxie (Champy & Gley 1911, in Compt. Rend. Soc. de Biol. 71 161).] /ˌtækəfəˈlæksəs/ΘΚΠ
the world > health and disease > healing > medical treatment > treatment by medicine or drug > [noun] > effects of medicines or drugs
side effect1868
placebo effect1902
tachyphylaxis1911
side action1933
nocebo effect1961
1911 Index Medicus IX. Index of Subjects 214/2 Tachyphylaxis.
1947 F. K. Oldham et al. Essent. Pharmacol. xi. 132 Its [sc. ephedrine's] disadvantages include..the lessened effect of repeated doses (tachyphylaxis).
1979 Nature 29 Nov. 515/2 The response to DAEA showed neither desensitisation during a 3-min exposure period nor tachyphylaxis with repeated applications.
tachypnœa n.
Brit. /ˌtakᵻpˈniːə/
, /ˌtakᵻpˈniːə/U.S. /ˌtækə(p)ˈniə/
hurried or unusually rapid respiration. [After ancient Greek ταχύπνοια < ταχυ- tachy- comb. form + -πνοια breathing < πνεῖν to breathe (see pneuma n.); compare French tachypnée (1890 or earlier).] /ˌtækə(p)ˈniə/ΘΚΠ
the world > health and disease > ill health > a disease > disorders of internal organs > disordered breathing > [noun] > rapid breathing
polypnoea1891
tachypnœa1898
1898 New Sydenham Soc. Lexicon Tachypnœa.
1899 T. C. Allbutt et al. Syst. Med. VIII. 109 There is an hysterical dyspnœa, or rather tachypnœa; the respirations are hurried.
tachypnœic adj.
Brit. /ˌtakᵻpˈniːɪk/
, /ˌtakᵻpˈniːɪk/U.S. /ˌtækə(p)ˈniɪk/
Medicine exhibiting tachypnœa./ˌtækə(p)ˈniɪk/ΘΚΠ
the world > health and disease > ill health > a disease > disorders of internal organs > disordered breathing > [adjective] > rapid breathing
polypnoeic1891
tachypnœic1961
1961 Webster's 3rd New Internat. Dict. Eng. Lang. Tachypneic.
1976 Lancet 13 Nov. 1083/1 He was not cyanotic or tachypnœic.
tachyscope n.
Brit. /ˈtakᵻskəʊp/
, /ˈtakᵻskəʊp/U.S. /ˈtækəˌskoʊp/
a kind of kinetoscope, in which a series of representations of an object in successive phases of motion are rapidly revolved, so as to present the appearance of actual motion. [Compare French tachyscope (1889 or earlier), German Tachyskop (1887 or earlier).] /ˈtækəˌskoʊp/ΘΚΠ
society > leisure > the arts > performance arts > cinematography > projection > [noun] > apparatus for projecting films
kinematoscope1861
tachyscope1889
kinetoscope1894
kinematograph1895
mutoscope1895
biograph1896
cinematograph1896
cinematoscope1896
kinetophone1896
theatroscope1896
vitascope1896
bioscope1897
polyscope1900
cinema1908
cinephone1909
cine projector1916
animatograph1919
1889 Sci. Amer. 16 Nov. 310/1 Mr. Anschuetz has invented apparatus by means of which these [animated] pictures may be exhibited in a very perfect manner. This instrument..is known as the ‘electrical tachyscope’.
tachythanatous adj.
Brit. /ˌtakᵻˈθanətəs/
, /ˌtakᵻˈθanətəs/U.S. /ˌtækəˈθænədəs/
killing quickly, rapidly fatal. [After post-classical Latin tachythanatos (1664 or earlier) < ancient Greek ταχυθάνατος liable to sudden death, killing quickly < ταχυ- tachy- comb. form θάνατος death (see thanato- comb. form).] /ˌtækəˈθænədəs/ΘΚΠ
the world > life > death > cause of death > [adjective]
deadlyc893
deathlyOE
deathfula1250
mortalc1390
capitalc1426
exitialc1475
fey1488
mortuala1500
perishinga1500
fatal?1518
ferial1528
mortiferousa1538
deadc1540
exitious?1545
deathlike1548
mortifying1555
starvingc1600
lethal1604
speedingc1604
vital1612
irrecoverable1614
feral1621
lethiferous1651
mortific1651
mortifical1657
daggering1694
exitiose1727
fateful1764
kill-devil1831
unsurvivable1839
lethiferal1848
tachythanatous1860
1860 R. G. Mayne Expos. Lexicon Med. Sci. Tachythanatous.
1890 J. S. Billings National Med. Dict. II
tachytomy n. /təˈkɪtəmi/, /təˈkɪdəmi/ (also tachyˈotomy) the art of rapid surgical or anatomical operation. [After French tachytomie (1843).]
Brit. /taˈkɪtəmi/
, /taˈkɪtəmi//təˈkɪtəmi/U.S. /tæˈkɪdəmi/
, /tæˈkɪdəmi//təˈkɪdəmi/ΘΚΠ
the world > health and disease > healing > medical treatment > surgery > [noun] > types of surgery generally
plastic surgery1837
self-surgery1863
oral surgery1866
electrosurgery1870
Listerism1880
morioplasty1880
brain surgery1881
tachytomy1898
neurosurgery1904
radiosurgery1929
psychosurgery1936
microsurgery1959
microsurgery1960
cryosurgery1962
day surgery1968
work1968
biosurgery1969
psychic surgery1975
telesurgery1976
1898 New Sydenham Soc. Lexicon Tachyotomy, Tachytomy.
tachyzoite n.
Brit. /ˌtakᵻˈzəʊʌɪt/
, /ˌtakᵻˈzəʊʌɪt/U.S. /ˌtækəˈzoʊˌaɪt/
Zoology, one form of the protozoon toxoplasma (see quot. 1973)./ˌtækəˈzoʊˌaɪt/ΘΚΠ
the world > animals > invertebrates > protozoa > class Sporozoa > subclass Toxoplasmea > [noun] > member of genus Toxoplasma > form of
tachyzoite1973
1973 J. K. Frenkel in Hammond & Long Coccidia 344/1 I am introducing two other terms: ‘tachyzoites’ for the rapidly multiplying forms of the acute infection, previously called trophozoites, aggregations, and proliferative forms; and ‘bradyzoites’ for the slowly multiplying encysted forms characteristic of chronic infection, which have been variously called merozoites or just zoites.
1979 Biol. Abstr. 68 7579/1 Probably most toxoplasmosis infections involve the ingestion of cat feces bearing cysts and oocytes rather than contact with tachyzoites.
This entry has not yet been fully updated (first published 1910; most recently modified version published online March 2022).
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comb. form1842