deltan.

Brit.

/ˈdɛltə/, U.S.

/ˈdɛltə/

Etymology: < Greek δέλτα ( < Phoenician daleth), name of the fourth letter of the Greek alphabet; also the land at the mouth of the Nile (Herod.), the Indus (Strabo), etc.

a. The name of the fourth letter of the Greek alphabet, having the form of a triangle (Δ), and the power of D.

ΘΚΠ

society > communication > writing > written character > name of written character > [noun] > Greek

alphac1175

muc1175

betaa1400

taua1400

chic1400

deltac1400

etac1400

kappac1400

gamma?a1425

lambda?a1425

nu?a1425

phi?a1425

pi?a1425

psi?a1425

rho?a1425

xi?a1425

zeta?a1425

upsilon1559

san1584

omega1599

theta1603

iota1607

sigma1607

omicron1631

digamma1699

epsilon1842

zeta1850

c1400 Mandeville's Trav. (1839) iii. 20 Ȝif ȝee wil wite of here A, B, C..thei clepen hem..α Alpha..δ Deltha..ω Omega.

1601 P. Holland tr. Pliny Hist. World I. 96 Many haue called Ægypt by the name of the Greeke letter Delta.

1860 T. A. G. Balfour Typ. Char. Nature 118 In Botany the symbol of a perennial plant is a Delta.

b. An examiner's fourth-class mark (often the lowest grading category). Also transferred, applied to a person.

ΘΚΠ

the mind > goodness and badness > inferiority or baseness > inferior thing > [noun] > very

delta1911

the mind > goodness and badness > inferiority or baseness > inferior thing > [noun] > fourth-class mark

delta1911

society > education > educational administration > examination > [noun] > marks > specific marks

accessit1753

honour1774

credit1802

second class1810

firsta1830

first class1830

third class1844

Hons.1850

max1851

second1852

special mention1886

distinction?1890

A1892

E1892

pass mark1894

two-two1895

alpha1898

alpha plus1898

gamma1898

beta1902

delta1911

alpha minus1914

fourth1914

straight A1926

two-one1937

lower second1960

honourable mention2011

society > society and the community > social class > the common people > low rank or condition > the lowest class > [noun] > person of the lowest class

ribalda1250

kitchen knave1440

scullion1483

scudler1488

canel raker?1518

channel raker1575

proletary1576

muckworm1649

proletariana1657

infimate1733

proletaire1796

coolie1803

gutterling1846

mudsill1858

prole1887

gutter-sparrow1890

gutter-bird1896

underworldling1928

delta1932

lumpenproletarian1936

proly1959

1911 T. H. Warren Oxford & Poetry in 1911 19 Swinburne estimated in superlatives or the opposite. His marks were all α+ or δ−.

1932 A. Huxley Brave New World ii. 24 Why go to the trouble of making it psychologically impossible for Deltas to like flowers?

1958 Oxf. Mag. 13 Mar. 362/1 I have mentioned twenty recent pictures..four have some alpha about them; the rest are gamma minus to beta plus (I have not mentioned deltas).

a. Historical ( The Delta.) The tract of alluvial land enclosed and traversed by the diverging mouths of the Nile; so called from the triangular figure of the tract enclosed between the two main branches and the coastline.

ΘΚΠ

the world > the earth > land > land mass > shore or bank > land near river > [noun] > delta > Nile

The Delta1555

1555 R. Eden tr. Peter Martyr of Angleria Decades of Newe Worlde f. 250^v The goulfe of Arabie..from whense they determyned to brynge a nauigable trench vnto the ryuer of Nilus, where as is the fyrst Delta.

1601 P. Holland tr. Pliny Hist. World I. 67 As in Ægypt Nilus maketh that which they call Delta.

1636 H. Blount Voy. Levant 57 I enquired of the Delta, and the Niles seven streames.

1732 T. Lediard tr. J. Terrasson Life Sethos II. ix. 354 The most convenient port of the Delta.

1875 B. Jowett in tr. Plato Dialogues (ed. 2) III. 529 At the head of the Egyptian Delta, where the river Nile divides.

b. Geography. The more or less triangular tract of alluvial land formed at the mouth of a river, and enclosed or traversed by its diverging branches.

ΘΚΠ

the world > the earth > land > land mass > shore or bank > land near river > [noun] > delta

delta1790

delta-land1806

delta plain1890

1790 E. Gibbon Misc. Wks. (1814) III. 453 The triangular island or delta of Mesola, at the mouth of the Po.

1794 R. J. Sulivan View of Nature I. 94 The earthy matter, borne down by the floods, is..thrown back upon the shores, into bays and creeks, and into the mouths of rivers, where it forms deltas.

1830 C. Lyell Princ. Geol. I. 13 Islands have become connected with the main land by the growth of deltas and new deposits.

1840 F. Marryat Olla Podrida I. xxvi. 274 The two rivers..enclose a large delta of land.

1893 Nation 16 Feb. 125/1 The villages are situated on small deltas, built by torrential streams that descend from the neighboring hills.

a. Any triangular space or figure; †the constellation of the Triangle.

ΘΚΠ

the world > the universe > constellation > Northern constellations > [noun] > Triangulum

triangle1556

delta1638

1638 C. Aleyn Hist. Henrie VII 134 But if the nobler souls, as they maintein'd, Were fixed in the body of some starre, Then Edwards murder'd sonnes and Warwickes are In those call'd Delta, of Triangle fashion.

b. In three-phase electrical equipment, the arrangement of the three windings in series in a manner represented by a triangle, each of the three wires of the circuit being connected to a junction of two windings; chiefly used attributively, as delta connection n.

ΚΠ

1902 Encycl. Brit. XXVII. 582/2 Any three-phase winding may be changed over from the star to the delta connection.

1902 Encycl. Brit. XXVII. 592/1 If the three coils are closed upon themselves in a mesh or delta fashion.

1943 Gloss. Terms Electr. Engin. (B.S.I.) 19 Delta connection, a method of connection, in three-phase A.C. working, in which three conductors or windings are so connected that they may be represented diagrammatically by a triangle.

Compounds

C1. General attributive.

delta-deposit n.

ΚΠ

1863 J. D. Dana Man. Geol. ii. 647 Stratification of delta deposits.

delta-formation n.

ΘΚΠ

the world > the earth > structure of the earth > formation of features > sedimentation > [noun] > delta formation

delta-formation1858

deltation1886

1858 A. Geikie Story of Boulder ix. 172 The process of delta-formation remains essentially the same, both in lakes and at the sea.

delta-land n.

ΘΚΠ

the world > the earth > land > land mass > shore or bank > land near river > [noun] > delta

delta1790

delta-land1806

delta plain1890

1806 R. Forsyth Beauties Scotl. IV. 225 The Carse..considered as the finest sort of alluvial or delta land.

C2.

delta connection n. (see above); hence delta-connected adj.

ΚΠ

1964 R. F. Ficchi Electr. Interference x. 201 If it is necessary to establish a neutral with a delta-connected secondary, grounding transformers are used to form a neutral solidly connected to ground.

delta frequency n. the most slowly varying of the ‘brain waves’ recorded by an electroencephalograph, having a frequency of less than about three per second and normally present only during deep sleep.

ΚΠ

1961 Lancet 16 Sept. 631/1 Low-amplitude slow activity much of it of delta frequency, compatible with a delirium.

delta-metal n. an alloy of copper, zinc, and iron introduced about 1883, and named in allusion to its three constituents.

ΘΚΠ

society > occupation and work > materials > derived or manufactured material > metal > alloy > [noun] > other copper alloys

tombac1602

blanched copper1621

orichalcum1646

cock metal1766

gold bronze1785

bidri1794

tumbaga1860

Aich's metal1861

sterro-metal1865

talmi1868

Abyssinian gold1869

delta-metal1883

Tobin bronze1891

manganin1894

Eureka1914

1883 Engineer 23 Feb. 140 Mr. Alexander Dick [has] succeeded in producing an alloy which he calls ‘Delta metal’.

1884 Times 14 June 8 ‘Delta metal’..is an alloy of copper, zinc, and iron..A steam launch..has..been built entirely of this metal [by Mr. A. Dick].

delta plain n. the flat area of a delta.

ΘΚΠ

the world > the earth > land > land mass > shore or bank > land near river > [noun] > delta

delta1790

delta-land1806

delta plain1890

1890 W. M. Davis in Bull. Geol. Soc. America I. 200 Glacial Sand Plains... A corollary of the rapid growth of the delta plains compared to the retreat of the ice is, that the growth of the delta plains was a local..spasmodic operation.

1903 Amer. Geol. Sept. 163 For such topographic forms professor Davis long since proposed the name of delta-plain or delta-plateau, instead of sand-plain.

delta plateau n. a raised delta plain.

ΚΠ

1892 W. M. Davis in Proc. Boston Soc. Nat. Hist. 25 489 Sand plateaus as deltas, marginal to the decaying ice sheet... The size of the delta would depend on the activity of the feeding stream from the ice, and on..the gravel ridges or eskers so often extending backward from the head of the delta plateau.

1903 Amer. Geol. Sept. 163 For such topographic forms professor Davis long since proposed the name of delta-plain or delta-plateau, instead of sand-plain.

delta-rays n. (also δ-rays,) rays of low penetrating power consisting of slow electrons released by the passage of ionizing particles such as alpha-rays through matter.

ΚΠ

1908 E. Rutherford & H. Geiger in Proc. Royal Soc. A. 81 163 It is well known that the α-particles, in their passage through matter, liberate a large number of slow-velocity electrons, or δ-rays, as they have been termed by J. J. Thomson.

1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) I. 267/2 An appreciable fraction, roughly one-half, of the energy lost by α-rays appears as δ-rays.

delta rhythm n. = delta frequency n.

ΚΠ

1938 Jrnl. Neurol. & Psychiatry 1 383 A similar delta rhythm appears locally when only a part of the cortex is affected.

1943 Electronic Engin. 15 520 A waveform of much lower frequency which is characteristic of a cerebral tumour. The name delta rhythm has been given to this wave which usually has a frequency of 3 c/s or lower.

delta wave n. = delta frequency n.

ΚΠ

1936 W. G. Walter in Lancet 8 Aug. 308/1 It is suggested that..these slow waves from the neighbourhood of tumours be called ‘δ waves’ until their true nature be discovered.

1957 Dorland's Illustr. Med. Dict. (ed. 23) 1540/2 Delta waves, waves in the electroencephalogram which have a frequency of ½ to 3 per second.

1968 Brit. Med. Bull. 24 202/1 The background consists of random slow activity which is symmetrical and there are some delta waves mixed with the alpha rhythm.

delta wing n. a type of triangular swept-back aeroplane wing.

ΘΚΠ

society > travel > air or space travel > a means of conveyance through the air > aeroplane > parts of aircraft > [noun] > plane or aerofoil > wing > types of wing

gull wing1932

shoulder wing1941

delta wing1946

swept wing1947

ogee wing1960

1946 Jrnl. Brit. Interplan. Soc. 6 94 The first effect..can..be reduced but not eliminated by the use of a very low aspect-ratio triangular wing platform (the so-called ‘Delta’ wing).

1951 Engineering 20 Apr. 474/3 Type of..swept-back ‘delta’-wing experimental aircraft.

1970 Flight (Life Science Libr.) 181 The delta wing of the F-106 Delta Dart..combines the advantages of sweepback with those of a thin wing, and is structurally stronger and easier to build than either.

delta-winged adj. descriptive of aircraft with this type of wing.

ΘΚΠ

society > travel > air or space travel > a means of conveyance through the air > aeroplane > [adjective] > having specific type or position of wings

multiplane1897

monoplane1907

all-wing1919

mid-wing1934

delta-winged1950

tilt-wing1953

stub-winged1957

wet wing1961

1950 National Geographic Mag. Sept. 282/2 Among the latest to be tested against Father Time and the laws of aerodynamics is the new Air Force delta-winged plane.

1954 Economist 11 Sept. (Suppl.) 2/1 This year..Gloster Aircraft were able to put five delta-winged Javelins in the air at once.

Draft additions 1993

delta cell n. Histology a cell of the islets of Langerhans which produces the hormone somatostatin.

ΘΚΠ

the world > life > biology > substance > cell > types of cells > [noun] > other types of cells

reticular cell1832

torula1833

reserve cell1842

subcell1844

parenchyma cell1857

pedicel cell1858

nettle cell1870

heterocyst1872

prickle cell1872

angioblast1875

palisade cell1875

sextant1875

spindle cell1876

neuroblast1878

body cell1879

plasma cell1882

reticulum cell1882

stem cell1885

Langhans1886

basal cell1889

pole cell1890

myelocyte1891

statocyst1892

mast cell1893

thrombocyte1893

iridocyte1894

precursor1895

nurse cell1896

amacrine1900

statocyte1900

mononuclear1903

oat cell1903

myeloblast1904

trochoblast1904

adipocyte1906

polynuclear1906

fibrocyte1911

akaryote1920

Rouget cell1922

Sternberg–Reed1922

amphicyte1925

monoblast1925

pericyte1925

promyelocyte1925

pituicyte1930

agamete1932

sympathogonia1934

athrocyte1938

progenitor1938

Reed–Sternberg cell1939

submarginal1941

delta cell1942

mastocyte1947

squame1949

podocyte1954

transformed cell1956

transformant1957

spheroplast1958

pinealocyte1961

immunocyte1963

lactotroph1966

mammotroph1966

minicell1967

proheterocyst1970

myofibroblast1971

cybrid1974

1931 W. Bloom in Anatomical Rec. 49 368 I have found three types of granular cells in the islets of Langerhans. One of these is the A type, [etc.]... In some of the D cells, the cytoplasm appears homogeneously blue.]

1942 T. B. Thomas in Anatomical Rec. 82 334 The delta cells contain bright blue granules and range in size from small wedge-shaped cells to large rounded ones similar to the beta cells.

1959 W. Andrew Textbk. Compar. Histol. vii. 305 Birds have been shown to have two types of islets in the pancreas... The second is dark and consists of alpha and delta cells along with transitional forms.

1979 Sci. Amer. Nov. 57/3 The delta cells secrete the hormone somatostatin, which inhibits the secretion of both insulin and glucagon.

This entry has not yet been fully updated (first published 1895; most recently modified version published online June 2022).

单词	delta
释义	deltan. Brit. /ˈdɛltə/, U.S. /ˈdɛltə/ Etymology: < Greek δέλτα ( < Phoenician daleth), name of the fourth letter of the Greek alphabet; also the land at the mouth of the Nile (Herod.), the Indus (Strabo), etc. 1. a. The name of the fourth letter of the Greek alphabet, having the form of a triangle (Δ), and the power of D. ΘΚΠ society > communication > writing > written character > name of written character > [noun] > Greek alphac1175 muc1175 betaa1400 taua1400 chic1400 deltac1400 etac1400 kappac1400 gamma?a1425 lambda?a1425 nu?a1425 phi?a1425 pi?a1425 psi?a1425 rho?a1425 xi?a1425 zeta?a1425 upsilon1559 san1584 omega1599 theta1603 iota1607 sigma1607 omicron1631 digamma1699 epsilon1842 zeta1850 c1400 Mandeville's Trav. (1839) iii. 20 Ȝif ȝee wil wite of here A, B, C..thei clepen hem..α Alpha..δ Deltha..ω Omega. 1601 P. Holland tr. Pliny Hist. World I. 96 Many haue called Ægypt by the name of the Greeke letter Delta. 1860 T. A. G. Balfour Typ. Char. Nature 118 In Botany the symbol of a perennial plant is a Delta. b. An examiner's fourth-class mark (often the lowest grading category). Also transferred, applied to a person. ΘΚΠ the mind > goodness and badness > inferiority or baseness > inferior thing > [noun] > very delta1911 the mind > goodness and badness > inferiority or baseness > inferior thing > [noun] > fourth-class mark delta1911 society > education > educational administration > examination > [noun] > marks > specific marks accessit1753 honour1774 credit1802 second class1810 firsta1830 first class1830 third class1844 Hons.1850 max1851 second1852 special mention1886 distinction?1890 A1892 E1892 pass mark1894 two-two1895 alpha1898 alpha plus1898 gamma1898 beta1902 delta1911 alpha minus1914 fourth1914 straight A1926 two-one1937 lower second1960 honourable mention2011 society > society and the community > social class > the common people > low rank or condition > the lowest class > [noun] > person of the lowest class ribalda1250 kitchen knave1440 scullion1483 scudler1488 canel raker?1518 channel raker1575 proletary1576 muckworm1649 proletariana1657 infimate1733 proletaire1796 coolie1803 gutterling1846 mudsill1858 prole1887 gutter-sparrow1890 gutter-bird1896 underworldling1928 delta1932 lumpenproletarian1936 proly1959 1911 T. H. Warren Oxford & Poetry in 1911 19 Swinburne estimated in superlatives or the opposite. His marks were all α+ or δ−. 1932 A. Huxley Brave New World ii. 24 Why go to the trouble of making it psychologically impossible for Deltas to like flowers? 1958 Oxf. Mag. 13 Mar. 362/1 I have mentioned twenty recent pictures..four have some alpha about them; the rest are gamma minus to beta plus (I have not mentioned deltas). 2. a. Historical ( The Delta.) The tract of alluvial land enclosed and traversed by the diverging mouths of the Nile; so called from the triangular figure of the tract enclosed between the two main branches and the coastline. ΘΚΠ the world > the earth > land > land mass > shore or bank > land near river > [noun] > delta > Nile The Delta1555 1555 R. Eden tr. Peter Martyr of Angleria Decades of Newe Worlde f. 250^v The goulfe of Arabie..from whense they determyned to brynge a nauigable trench vnto the ryuer of Nilus, where as is the fyrst Delta. 1601 P. Holland tr. Pliny Hist. World I. 67 As in Ægypt Nilus maketh that which they call Delta. 1636 H. Blount Voy. Levant 57 I enquired of the Delta, and the Niles seven streames. 1732 T. Lediard tr. J. Terrasson Life Sethos II. ix. 354 The most convenient port of the Delta. 1875 B. Jowett in tr. Plato Dialogues (ed. 2) III. 529 At the head of the Egyptian Delta, where the river Nile divides. b. Geography. The more or less triangular tract of alluvial land formed at the mouth of a river, and enclosed or traversed by its diverging branches. ΘΚΠ the world > the earth > land > land mass > shore or bank > land near river > [noun] > delta delta1790 delta-land1806 delta plain1890 1790 E. Gibbon Misc. Wks. (1814) III. 453 The triangular island or delta of Mesola, at the mouth of the Po. 1794 R. J. Sulivan View of Nature I. 94 The earthy matter, borne down by the floods, is..thrown back upon the shores, into bays and creeks, and into the mouths of rivers, where it forms deltas. 1830 C. Lyell Princ. Geol. I. 13 Islands have become connected with the main land by the growth of deltas and new deposits. 1840 F. Marryat Olla Podrida I. xxvi. 274 The two rivers..enclose a large delta of land. 1893 Nation 16 Feb. 125/1 The villages are situated on small deltas, built by torrential streams that descend from the neighboring hills. 3. a. Any triangular space or figure; †the constellation of the Triangle. ΘΚΠ the world > the universe > constellation > Northern constellations > [noun] > Triangulum triangle1556 delta1638 1638 C. Aleyn Hist. Henrie VII 134 But if the nobler souls, as they maintein'd, Were fixed in the body of some starre, Then Edwards murder'd sonnes and Warwickes are In those call'd Delta, of Triangle fashion. b. In three-phase electrical equipment, the arrangement of the three windings in series in a manner represented by a triangle, each of the three wires of the circuit being connected to a junction of two windings; chiefly used attributively, as delta connection n. ΚΠ 1902 Encycl. Brit. XXVII. 582/2 Any three-phase winding may be changed over from the star to the delta connection. 1902 Encycl. Brit. XXVII. 592/1 If the three coils are closed upon themselves in a mesh or delta fashion. 1943 Gloss. Terms Electr. Engin. (B.S.I.) 19 Delta connection, a method of connection, in three-phase A.C. working, in which three conductors or windings are so connected that they may be represented diagrammatically by a triangle. Compounds C1. General attributive. delta-deposit n. ΚΠ 1863 J. D. Dana Man. Geol. ii. 647 Stratification of delta deposits. delta-formation n. ΘΚΠ the world > the earth > structure of the earth > formation of features > sedimentation > [noun] > delta formation delta-formation1858 deltation1886 1858 A. Geikie Story of Boulder ix. 172 The process of delta-formation remains essentially the same, both in lakes and at the sea. delta-land n. ΘΚΠ the world > the earth > land > land mass > shore or bank > land near river > [noun] > delta delta1790 delta-land1806 delta plain1890 1806 R. Forsyth Beauties Scotl. IV. 225 The Carse..considered as the finest sort of alluvial or delta land. C2. delta connection n. (see above); hence delta-connected adj. ΚΠ 1964 R. F. Ficchi Electr. Interference x. 201 If it is necessary to establish a neutral with a delta-connected secondary, grounding transformers are used to form a neutral solidly connected to ground. delta frequency n. the most slowly varying of the ‘brain waves’ recorded by an electroencephalograph, having a frequency of less than about three per second and normally present only during deep sleep. ΚΠ 1961 Lancet 16 Sept. 631/1 Low-amplitude slow activity much of it of delta frequency, compatible with a delirium. delta-metal n. an alloy of copper, zinc, and iron introduced about 1883, and named in allusion to its three constituents. ΘΚΠ society > occupation and work > materials > derived or manufactured material > metal > alloy > [noun] > other copper alloys tombac1602 blanched copper1621 orichalcum1646 cock metal1766 gold bronze1785 bidri1794 tumbaga1860 Aich's metal1861 sterro-metal1865 talmi1868 Abyssinian gold1869 delta-metal1883 Tobin bronze1891 manganin1894 Eureka1914 1883 Engineer 23 Feb. 140 Mr. Alexander Dick [has] succeeded in producing an alloy which he calls ‘Delta metal’. 1884 Times 14 June 8 ‘Delta metal’..is an alloy of copper, zinc, and iron..A steam launch..has..been built entirely of this metal [by Mr. A. Dick]. delta plain n. the flat area of a delta. ΘΚΠ the world > the earth > land > land mass > shore or bank > land near river > [noun] > delta delta1790 delta-land1806 delta plain1890 1890 W. M. Davis in Bull. Geol. Soc. America I. 200 Glacial Sand Plains... A corollary of the rapid growth of the delta plains compared to the retreat of the ice is, that the growth of the delta plains was a local..spasmodic operation. 1903 Amer. Geol. Sept. 163 For such topographic forms professor Davis long since proposed the name of delta-plain or delta-plateau, instead of sand-plain. delta plateau n. a raised delta plain. ΚΠ 1892 W. M. Davis in Proc. Boston Soc. Nat. Hist. 25 489 Sand plateaus as deltas, marginal to the decaying ice sheet... The size of the delta would depend on the activity of the feeding stream from the ice, and on..the gravel ridges or eskers so often extending backward from the head of the delta plateau. 1903 Amer. Geol. Sept. 163 For such topographic forms professor Davis long since proposed the name of delta-plain or delta-plateau, instead of sand-plain. delta-rays n. (also δ-rays,) rays of low penetrating power consisting of slow electrons released by the passage of ionizing particles such as alpha-rays through matter. ΚΠ 1908 E. Rutherford & H. Geiger in Proc. Royal Soc. A. 81 163 It is well known that the α-particles, in their passage through matter, liberate a large number of slow-velocity electrons, or δ-rays, as they have been termed by J. J. Thomson. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) I. 267/2 An appreciable fraction, roughly one-half, of the energy lost by α-rays appears as δ-rays. delta rhythm n. = delta frequency n. ΚΠ 1938 Jrnl. Neurol. & Psychiatry 1 383 A similar delta rhythm appears locally when only a part of the cortex is affected. 1943 Electronic Engin. 15 520 A waveform of much lower frequency which is characteristic of a cerebral tumour. The name delta rhythm has been given to this wave which usually has a frequency of 3 c/s or lower. delta wave n. = delta frequency n. ΚΠ 1936 W. G. Walter in Lancet 8 Aug. 308/1 It is suggested that..these slow waves from the neighbourhood of tumours be called ‘δ waves’ until their true nature be discovered. 1957 Dorland's Illustr. Med. Dict. (ed. 23) 1540/2 Delta waves, waves in the electroencephalogram which have a frequency of ½ to 3 per second. 1968 Brit. Med. Bull. 24 202/1 The background consists of random slow activity which is symmetrical and there are some delta waves mixed with the alpha rhythm. delta wing n. a type of triangular swept-back aeroplane wing. ΘΚΠ society > travel > air or space travel > a means of conveyance through the air > aeroplane > parts of aircraft > [noun] > plane or aerofoil > wing > types of wing gull wing1932 shoulder wing1941 delta wing1946 swept wing1947 ogee wing1960 1946 Jrnl. Brit. Interplan. Soc. 6 94 The first effect..can..be reduced but not eliminated by the use of a very low aspect-ratio triangular wing platform (the so-called ‘Delta’ wing). 1951 Engineering 20 Apr. 474/3 Type of..swept-back ‘delta’-wing experimental aircraft. 1970 Flight (Life Science Libr.) 181 The delta wing of the F-106 Delta Dart..combines the advantages of sweepback with those of a thin wing, and is structurally stronger and easier to build than either. delta-winged adj. descriptive of aircraft with this type of wing. ΘΚΠ society > travel > air or space travel > a means of conveyance through the air > aeroplane > [adjective] > having specific type or position of wings multiplane1897 monoplane1907 all-wing1919 mid-wing1934 delta-winged1950 tilt-wing1953 stub-winged1957 wet wing1961 1950 National Geographic Mag. Sept. 282/2 Among the latest to be tested against Father Time and the laws of aerodynamics is the new Air Force delta-winged plane. 1954 Economist 11 Sept. (Suppl.) 2/1 This year..Gloster Aircraft were able to put five delta-winged Javelins in the air at once. Draft additions 1993 delta cell n. Histology a cell of the islets of Langerhans which produces the hormone somatostatin. ΘΚΠ the world > life > biology > substance > cell > types of cells > [noun] > other types of cells reticular cell1832 torula1833 reserve cell1842 subcell1844 parenchyma cell1857 pedicel cell1858 nettle cell1870 heterocyst1872 prickle cell1872 angioblast1875 palisade cell1875 sextant1875 spindle cell1876 neuroblast1878 body cell1879 plasma cell1882 reticulum cell1882 stem cell1885 Langhans1886 basal cell1889 pole cell1890 myelocyte1891 statocyst1892 mast cell1893 thrombocyte1893 iridocyte1894 precursor1895 nurse cell1896 amacrine1900 statocyte1900 mononuclear1903 oat cell1903 myeloblast1904 trochoblast1904 adipocyte1906 polynuclear1906 fibrocyte1911 akaryote1920 Rouget cell1922 Sternberg–Reed1922 amphicyte1925 monoblast1925 pericyte1925 promyelocyte1925 pituicyte1930 agamete1932 sympathogonia1934 athrocyte1938 progenitor1938 Reed–Sternberg cell1939 submarginal1941 delta cell1942 mastocyte1947 squame1949 podocyte1954 transformed cell1956 transformant1957 spheroplast1958 pinealocyte1961 immunocyte1963 lactotroph1966 mammotroph1966 minicell1967 proheterocyst1970 myofibroblast1971 cybrid1974 1931 W. Bloom in Anatomical Rec. 49 368 I have found three types of granular cells in the islets of Langerhans. One of these is the A type, [etc.]... In some of the D cells, the cytoplasm appears homogeneously blue.] 1942 T. B. Thomas in Anatomical Rec. 82 334 The delta cells contain bright blue granules and range in size from small wedge-shaped cells to large rounded ones similar to the beta cells. 1959 W. Andrew Textbk. Compar. Histol. vii. 305 Birds have been shown to have two types of islets in the pancreas... The second is dark and consists of alpha and delta cells along with transitional forms. 1979 Sci. Amer. Nov. 57/3 The delta cells secrete the hormone somatostatin, which inhibits the secretion of both insulin and glucagon. This entry has not yet been fully updated (first published 1895; most recently modified version published online June 2022). < n.c1400
随便看	nondenominationalism nondenominationalisms nondenumerable nondenumerably nondeposition nondepositions nonderivability nonderivative nonderivatives nonderivatized nondescript nondescriptive nondescriptly nondescripts nondesignative nondestructive nondestructively nondestructiveness nondestructivenesses nondeterminism nondeterministic nondevelopment nondevelopments nondiabetic nondiabetics