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state of prolonged unconsciousness, 1640s, from Latinized form of Greek koma (genitive komatos) "deep sleep," of uncertain origin.
"head of a comet," 1765, from Latin coma, from Greek kome "hair of the head," of unknown origin. Earlier in English as a botanical term for a tuft of hairs (1660s).
coma co·ma (kō'mə)
A state of profound unconsciousness in which an individual is incapable of sensing or responding to external stimuli.
|coma 1 |
A state of deep unconsciousness, usually resulting from brain trauma or metabolic disease, in which an individual is incapable of sensing or responding to external stimuli.
|coma 2 |
Plural comae (kō'mē)