| Coma 1. (n.) A state of profound insensibility from which it is difficult or impossible to rouse a person. See Carus. 2. (n.) The envelope of a comet; a nebulous covering, which surrounds the nucleus or body of a comet. 3. (n.) A tuft or bunch, -- as the assemblage of branches forming the head of a tree; or a cluster of bracts when empty and terminating the inflorescence of a plant; or a tuft of long hairs on certain seeds. Thesaurus Entries KO, blackout, catalepsy, catatonia, catatony, dullness, encephalitis lethargica, faint, grayout, hebetude, high, kayo, knockout, languor, lassitude, lethargy, lipothymia, lipothymy, narcohypnosis, narcolepsy, narcoma, narcosis, narcotic stupor, narcotization, nirvana, nirvana principle, nod, nothingness, oblivion, obliviousness, sedation, semiconsciousness, senselessness, shock, sleep, sleeping sickness, slumber, sopor, stupor, swoon, syncope, thanatosis, torpidity, torpor, trance, unconsciousness |