Thesaurus: coma

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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.
4. n. a state of deep and often prolonged unconsciousness; usually the result of disease or injury
5. n. (botany) a usually terminal tuft of bracts (as in the pineapple) or tuft of hairs (especially on certain seeds)
6. n. (astronomy) the luminous cloud of particles surrounding the frozen nucleus of a comet; forms as the comet approaches the sun and is warmed
7. A state of profound insensibility from which it is difficult or impossible to rouse a person. See Carus. 1. (Astron.) The envelope of a comet; a nebulous covering, which surrounds the nucleus or body of a comet. 2. (Bot.) A tuft or bunch, -- as the assemblage of branches forming the head of a tree; or a cluster of brachts when empty and terminating the inflorescence of a plant; or a tuft of long hairs on certain seeds. Coma Berenices ( Etym: [L.] (Astron.), a small constellation north of Virgo; -- called also Berenice's Hair.
8. A state of profound insensibility from which it is difficult orimpossible to rouse a person. See Carus.
9. n:100 n. a state of deep and often prolonged unconsciousness; usually the result of disease or injury n. (botany) a usually terminal tuft of bracts (as in the pineapple) or tuft of hairs (especially on certain seeds) n. (astronomy) the luminous cloud of particles surrounding the frozen nucleus of a comet; forms as the comet approaches the sun and is warmed