- coma (n.1)
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[coma 词源字典] - state of prolonged unconsciousness, 1640s, from Latinized form of Greek koma (genitive komatos) "deep sleep," which is of uncertain origin. A term for "coma" in Middle English was false sleep (late 14c.).[coma etymology, coma origin, 英语词源]
- coma (n.2)
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![iciba](/etym/ico/iciba.ico)
![Dict](/etym/ico/haici.ico)
![YouDict](/etym/ico/youdict.ico)
- "head of a comet," 1765, from Latin coma, from Greek kome "hair of the head," which is of unknown origin. Earlier in English as a botanical term for a tuft of hairs (1660s).