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单词 pentadactyl
释义

pentadactyln.1

Forms: 1600s pentadactyles (plural), 1600s pentedactyl.
Origin: Of multiple origins. Partly a borrowing from Latin. Partly a borrowing from French. Etymons: Latin pentadactylus; French pentadactyle.
Etymology: < classical Latin pentadactylus (Pliny Nat. Hist. 32. 147) < ancient Greek πενταδάκτυλος five-fingered or five-toed, five-pointed (see pentadactylous adj.), originally via Middle French pentadactyle (1562 in Du Pinet's translation of Pliny: compare quot. 1601).
Obsolete.
A shellfish mentioned by Pliny (not identified).
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Mollusca > [noun] > miscellaneous types > other types of mollusc
squame1393
shell-worm1591
spout-fish1594
pentadactyl1601
sea cucumber1601
pirot1611
worm1621
nun-fish1661
scarlet mussel1672
sea-navel1678
redcap?1711
strawberry cockle1713
sea-finger1748
sea-nail1748
sea-acorn1755
coneya1757
compass1776
bubble shell1818
glass-shell1851
golden comb1857
cryptodont1893
nuculoid1960
1601 P. Holland tr. Pliny Hist. World II. 451 The wilkes also and winckles which resemble shell-snailes: of which kind are the Pentadactyles, Melicembales, and the prickly Echinophoræ.
1661 R. Lovell Πανζωορυκτολογια, sive Panzoologicomineralogia Isagoge sig. B8 The turbines, are great,..tuberous,..muricate, or pentedactyls.
This entry has been updated (OED Third Edition, September 2005; most recently modified version published online December 2021).

pentadactyladj.n.2

Brit. /ˌpɛntəˈdakt(ᵻ)l/, U.S. /ˌpɛn(t)əˈdæktl/
Forms: 1800s– pentadactyle, 1900s– pentadactyl.
Origin: Formed within English, by compounding. Etymons: penta- comb. form, -dactyl comb. form.
Etymology: < penta- comb. form + -dactyl comb. form. Compare French pentadactyle , adjective (a1789 or earlier), Spanish pentadáctilo (1780 or earlier). Compare earlier pentadactylous adj.
Chiefly Zoology.
A. adj.
Having five fingers, toes, or finger-like processes; spec. designating the ancestral limb-bone pattern of land vertebrates.
ΘΚΠ
the world > life > the body > external parts of body > limb > digit > [adjective] > having specific number of
pentadactylous1717
didactylous1802
didactyl1803
pentadactyl?a1808
polydactyl1827
hexadactylous1828
tetradactyl1847
polydactylous1858
sexdigitated1868
sexdigital1875
hexadactylic1880
pentadactylic1880
the world > animals > animal body > general parts > body and limbs > [adjective] > having separate digits > having several digits > having five digits
pentadactylous1717
pentadactyl?a1808
pentadactylic1880
?a1808 Universal Syst. Nat. Hist. XII. 259 The limbs are of moderate length and rather slender than strong: the feet all pentadactyle, with slender toes, armed by curved claws.
1854 R. Owen Struct. Skeleton & Teeth in Orr's Circle Sci.: Org. Nature I. 226 The toe answering to the fifth, in lizards and other pentadactyle animals.
1887 Athenæum 23 Apr. 548/1 It is shown how primitive is the plantigrade pentadactyle foot of man.
1927 Science 24 June 603 The retention of unimpaired pentadactyl extremities, of a claviculate shoulder girdle, of undiminished powers of supination of the hand..all testify explicitly to the fact that man's ground-living adaptations are his latest acquisitions.
1961 J. Stubblefield Davies's Introd. Palaeontol. (ed. 3) vi. 163 Their [sc. Paleocene mammals'] limbs are not greatly removed in structure from the primitive five-toed (pentadactyle) type, except for the presence of a projecting elbow in the fore-limb and heel in the hind-limb.
1977 P. B. Medawar & J. S. Medawar Life Sci. i. 17 A simple five-rayed (pentadactyl) structure.
1990 Daily Tel. 6 Sept. 7/2 Another find in Russia revealed a creature of similar age with six digits, making it more baffling why land living creatures are ‘pentadactyl’.
B. n.2
A person or animal with five digits on each limb.
ΘΚΠ
the world > life > the body > external parts of body > limb > digit > [noun] > having specific number of > person having
sexdigitist1775
pentadactyl1875
1875 Harper's Mag. Aug. 423/1 The last class of vertebrates are united by common traits, by having five fingers, by being therefore pentadactyls.
1880 R. A. Proctor Rough Ways 213 Marie, a pentadactyle with deformed thumbs, gave birth to a boy with six toes.
1926 R. W. Sellars Princ. & Probl. Philos. xx. 302 You see no deeper..than you see..into our having five fingers by calling us pentadactyls.
1995 Trop. Zool. 8 146 The morphologically most primitive species (pentadactyls)..testify to the <first evolutionary phase> of the trend towards limblessness.

Derivatives

pentaˈdactylism n. [originally after German Pentadactylie pentadactyly n.] now rare the state or condition of being pentadactyl.
ΘΚΠ
the world > life > the body > external parts of body > limb > digit > [noun] > having specific number of
sexdigitism1775
polydactylism1865
pentadactylism1879
polydactyly1886
tetradactylity1891
pentadactyly1892
1879 tr. E. Haeckel Evol. Man II. 300 The original parent-form of the entire group had anteriorly and posteriorly five digits (Pentadactylism [Ger. Pentadactylie]).
1886 Encycl. Brit. XX. 454/2 The digital elements seem to indicate more than pentadactylism, as in the extinct Ichthyosauri.
1990 N.Y. Times 17 Apr. c11/1 The basic primitive mammal trend is toward pentadactylism... Even the horse's hoof and the deer's hoof are modified from five digits.
This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022).
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n.11601adj.n.2?a1808
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