acephaliayoudaoicibaDictYouDict[acephalia 词源字典]
"Absence of a head, especially as a congenital malformation", Late 16th cent.; earliest use found in Richard Harvey (d. 1630), astrologer and polemicist. From classical Latin acephalus, in post-classical Latin sense ‘headless’ + -ia. In medical use after French acéphalie or scientific Latin acephalia.[acephalia etymology, acephalia origin, 英语词源]