Pronunciation: (kō'mu),[key] —n., —pl.-mas. a state of prolonged unconsciousness, including a lack of response to stimuli, from which it is impossible to rouse a person.
Pronunciation: (kō'mu),[key] —n., —pl.-maePronunciation: (-mē).[key] 1. Astron.the nebulous envelope around the nucleus of a comet.
2. Optics.a monochromatic aberration of a lens or other optical system in which the image from a point source cannot be brought into focus, the image of a point having the shape of a comet.
3. Bot. a. a tuft of silky hairs at the end of a seed.
b. the leafy crown of a tree; cluster of leaves at the end of a stem.
c. a terminal cluster of bracts, as in the pineapple.