coma

nouns

a state of deep and often prolonged unconsciousness; usually the result of disease or injury
coma, comatoseness
(botany) a usually terminal tuft of bracts (as in the pineapple) or tuft of hairs (especially on certain seeds)
coma
is derived from
comal
domain category
the branch of biology that studies plants
botany, phytology
is a type of (narrower)
a bunch of hair or feathers or growing grass
tuft, tussock
(astronomy) the luminous cloud of particles surrounding the frozen nucleus of a comet; forms as the comet approaches the sun and is warmed
coma
is a part of
(astronomy) a relatively small extraterrestrial body consisting of a frozen mass that travels around the sun in a highly elliptical orbit
comet
domain category
the branch of physics that studies celestial bodies and the universe as a whole
astronomy, uranology
is a type of (narrower)
any collection of particles (e.g., smoke or dust) or gases that is visible
cloud