coma¹ /kōˈmə/

1. A deeply unconscious state characterized by absence of response to external and internal stimuli, caused by an accumulation of poison in the brain tissue, head injury, cerebral haemorrhage, etc
2. Stupor

comˈatose adjective

1. Affected with coma
2. Extremely drowsy or sleeping heavily (facetious)

coma² /kōˈmə/

1. A tuft of hairs attached to the testa of a seed (botany)
2. A crown of leaves on certain trees
3. The nebulous envelope of the head of a comet (astronomy)
4. (the manifestation of) a defect in an optical system (eg in a telescope) in which the image of a point appears as a blurred pear-shaped patch (optics)

cōˈmal, cōˈmate, cōˈmose or cōˈmous adjective

comatˈulid noun

A feather star

Coma Berenices /ber-ə-nīˈsēz/ noun

Berenice's Hair, a small northern constellation

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