co·ma /ˈkomə/
 昏迷,痲木,慧發
 co·ma /ˈkomə/ 名詞
 昏迷
 Co·ma n.  A state of profound insensibility from which it is difficult or impossible to rouse a person. See Carus.
 Co·ma, n.
 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  Astron., a small constellation north of Virgo; -- called also Berenice's Hair.
 ◄ ►
 coma
      n 1: a state of deep and often prolonged unconsciousness; usually
           the result of disease or injury [syn: comatoseness]
      2: a usually terminal tuft of hairs especially on a seed
      3: (astronomy) the luminous cloud of particles surrounding the
         frozen nucleus of a comet; forms as the comet approaches
         the sun and is warmed
      [also: comae (pl)]