precoracoidyoudaoicibaDictYouDict[precoracoid 词源字典]
"A bone or cartilage in certain fishes, amphibians, reptiles, and birds, situated anterior to and sometimes fused with the coracoid bone of the pectoral girdle", Mid 19th cent.; earliest use found in William K. Parker (1823–1890), comparative anatomist and zoologist. From pre- + coracoid.[precoracoid etymology, precoracoid origin, 英语词源]