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单词 epicoracoid
释义

epicoracoidn.adj.

Brit. /ˌɛpᵻˈkɔːrəkɔɪd/, U.S. /ˌɛpəˈkɔrəˌkɔɪd/
Origin: Formed within English, by derivation. Etymons: epi- prefix, coracoid adj.
Etymology: < epi- prefix + coracoid adj. With the use as noun compare coracoid n.
Zoology.
A. n.
In certain vertebrates, esp. reptiles and amphibians: a bone or cartilage attached to the coracoid bone, forming part of the pectoral girdle.
ΚΠ
1840 R. Owen in Rep. Brit. Assoc. 1839 Rep. State Sci. 105 They are also complicated each in the young Ichthyosauri with an epiphysial piece.., which pieces correspond with the epicoracoids of the Lacertian Sauria and Ornithorhynchus.
1873 St. G. Mivart Lessons Elem. Anat. iv. 158 An additional flat bone placed in front of the inner end of the coracoid called the epicoracoid.
1903 Jrnl. Geol. (Chicago) 11 8 The coracoid remains free from the scapula through life, but the suture between the scapula and epicoracoid is closed near the outer edges of the bones.
1973 A. d'A. Bellairs & J. F. D. Frazer Smith's Brit. Amphibians & Reptiles (ed. 5) iv. 69 (caption) The two halves almost touch one another in the mid-line and are firmly united by a simple epicoracoid so that they are immovable.
2011 Jrnl. Herpetol. 45 85/2 Anteriorly, the epicoracoids are invested by the medial ends of the clavicles.
B. adj.
Of the nature of an epicoracoid; of or relating to an epicoracoid.
ΚΠ
1846 G. R. Waterhouse Nat. Hist. Mammalia I. 22 Lastly, in the chest, are four other bones; the two coracoid, and the two epicoracoid bones.
1875 C. C. Blake Zoology 78 The clavicle is single, and, unlike that in the Monotremata, is not associated with an epicoracoid bone.
1935 Q. Rev. Biol. 10 407/1 In Salientia the precoracoid and epicoracoid cartilages..surrounded the space.
1960 Copeia No. 3. 265/1 The two main divisions of the Salientia..can be precisely defined by the presence..of two posteriorly directed epicoracoid horns.
2002 G. Vallortigara & A. Bisazza in L. J. Rogers & R. J. Andrew Compar. Vertebr. Lateralization 23 In Bufo, a percentage..have the right epicoracoid cartilage superficial to the left.
This entry has been updated (OED Third Edition, March 2016; most recently modified version published online June 2022).
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n.adj.1840
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