||Co"ma (kō"mȧ), 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.