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单词 didactyl
释义

didactyladj.

Brit. /dʌɪˈdakt(ᵻ)l/, U.S. /daɪˈdækt(ə)l/
Forms: 1800s– didactyl, 1800s– didactyle.
Origin: Formed within English, by compounding; partly modelled on a French lexical item, and partly modelled on a Latin lexical item. Etymons: di- comb. form, -dactyl comb. form.
Etymology: < di- comb. form + -dactyl comb. form, after French didactyle (1754 or earlier) and its etymon post-classical Latin didactylus (1743 or earlier; 1521 or earlier denoting a type of poetic metre). Compare ancient Greek διδάκτυλος two fingers long or broad (with reference to measurement). Compare slightly earlier didactylous adj.
Zoology.
Having two fingers, toes, claws, or finger-like parts.
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 two digits or claws
didactylous1802
didactyl1803
1803 G. Shaw Gen. Zool. IV. i. 170 The pectoral fins are of moderate size; the ventral ones didactyle, and rather long.
1826 W. Kirby & W. Spence Introd. Entomol. (1828) III. xxxv. 676 The generality of insects have a didactyle or tridactyle hand or foot.
1894 Amer. Naturalist 28 165 Some genera [of artiodactyl] had been reduced to a didactyl condition.
1941 Q. Rev. Biol. 16 28/2 Both didactyl and tridactyl sloths may range over the same neighborhood.
1993 Jrnl. Paleontol. 67 245/1 Any of the individual prints..may be prints of an apparently didactyle or even tridactyle extremity.
2012 T. R. Holtz in M. K. Brett-Surman et al. Compl. Dinosaur xvix. 362 It is quite possible that the didactyl hand evolved earlier, perhaps even as early as Raptorrex.
This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022).
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adj.1803
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