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单词 ectrodactyly
释义

ectrodactylyn.

/ɛktrəʊˈdaktɪli/
Forms: Also ectrodactylia.
Etymology: < modern Latin ectrodactylia, < Greek ἔκτρωμα, -τρωσις, etc. ( < ἐκ- + τρω- to damage) + δάκτυλος finger.
Anatomy.
Congenital absence of digits.
ΚΠ
1848 R. Dunglison Med. Lexicon (ed. 7) 296/2 Ectrodactylia, a malformation, in which one or more fingers or toes are wanting.
1893 Jrnl. Anat. 27 422 Schæfar gives an account of five cases of ectrodactyly.
1899 Jrnl. Anat. 33 524 A case in which ectrodactyly and syndactyly of the right hand co-existed with double ectrodactyly of the feet.
1946 R. R. Gates Human Genetics I. xi. 434 Lobster claw appears to be an extreme form of syndactyly (i.e., combined with ectrodactyly).

Derivatives

ectroˈdactylism n.
ΚΠ
1883 Index-Catal. Libr. Surg.-Gen. U.S. IV. 51/1 Ectrodactylism.
1894 W. Bateson Materials Study Variation 358 Absence of Digits (Ectrodactylism).
1909 W. Bateson Mendel's Princ. Heredity (new ed.) xii. 228 Several pedigrees of ectrodactylism..are recorded in medical literature.
This entry has not yet been fully updated (first published 1933; most recently modified version published online December 2020).
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