Definitions for: Coma

[n] a state of deep and often prolonged unconsciousness; usually the result of disease or injury
[n] (astronomy) the luminous cloud of particles surrounding the frozen nucleus of a comet; forms as the comet approaches the sun and is warmed
[n] a usually terminal tuft of hairs especially on a seed

Webster (1913) Definition: Co"ma (k[=o]"m[.a]), n. [NL., fr. Gr. kw^ma lethargy, fr.
koima^n to put to sleep. See Cemetery.]
A state of profound insensibility from which it is difficult
or impossible to rouse a person. See Carus.

Co"ma, n. [L., hair, fr. Gr. ko`mh.]
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 bracts when
empty and terminating the inflorescence of a plant; or a
tuft of long hairs on certain seeds.

Coma Berenices[L.] (Astron.), a small constellation north
of Virgo; -- called also Berenice's Hair.

Synonyms: comatoseness

See Also: cloud, comet, diabetic coma, fuzz, hair, hepatic coma, Kussmaul's coma, tomentum, unconsciousness

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