RhymeZone: coma definitions

Definitions of coma:

noun: a state of deep and often prolonged unconsciousness; usually the result of disease or injury
noun: (astronomy) the luminous cloud of particles surrounding the frozen nucleus of a comet; forms as the comet approaches the sun and is warmed
noun: a usually terminal tuft of hairs especially on a seed
name: A surname (very rare: popularity rank in the U.S.: #41082)

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See coma used in context: 127+ rhymes, several books and articles.