Definition of COMA

coma

Meanings

Plural: comae, comas

Noun

  • a state of deep and often prolonged unconsciousness; usually the result of disease or injury
  • (botany) a usually terminal tuft of bracts (as in the pineapple) or tuft of hairs (especially on certain seeds)
  • (astronomy) the luminous cloud of particles surrounding the frozen nucleus of a comet; forms as the comet approaches the sun and is warmed
  • A state of unconsciousness from which one may not wake up, usually induced by some form of trauma.
  • A cloud of dust surrounding the nucleus of a comet.
  • A defect characterized by diffuse, pear-shaped images that in an ideal image would appear as points.
  • A tuft or bunch, such as the assemblage of branches forming the head of a tree, a cluster of bracts when empty and terminating the inflorescence of a plant, or a tuft of long hairs on certain seeds.

Origin / Etymology

Borrowed from Ancient Greek κῶμα (kôma, “deep sleep”).

Synonyms

comatoseness

Scrabble Score: 8

coma is a valid Scrabble (US) TWL word
coma is a valid Scrabble Word in Merriam-Webster MW Dictionary
coma is a valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 10

coma is a valid Words With Friends word