1.Definition: (astronomy) the luminous cloud of particles surrounding the frozen nucleus of a comet; forms as the comet approaches the sun and is warmed

Category: Objects

2.Definition: (botany) a usually terminal tuft of bracts (as in the pineapple) or tuft of hairs (especially on certain seeds)

Category: Plants

3.Definition: a state of deep and often prolonged unconsciousness; usually the result of disease or injury

Related Noun(s):comatoseness

Category: General