|—n , pl -mas|
|a state of unconsciousness from which a person cannot be aroused, caused by injury to the head, rupture of cerebral blood vessels, narcotics, poisons, etc|
|[C17: from medical Latin, from Greek kōma heavy sleep; related to Greek koitē bed, perhaps to Middle Irish cuma grief]|
|—n , pl -mae|
|1.||astronomy the luminous cloud surrounding the frozen solid nucleus in the head of a comet, formed by vaporization of part of the nucleus when the comet is close to the sun|
|a. a tuft of hairs attached to the seed coat of some seeds|
|b. the terminal crown of leaves of palms and moss stems|
|3.||optics a type of lens defect characterized by the formation of a diffuse pear-shaped image from a point object|
|[C17: from Latin: hair of the head, from Greek komē]|
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 (kō'mə) Pronunciation Key
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 (kō'mə) Pronunciation Key
Plural comae (kō'mē)