[co.ma] n [NL, fr. Gk koma deep sleep] (1646) 1: a state of profound unconsciousness caused by disease, injury, or poison
2: a state of mental or physical sluggishness: torpor
[2]coma n, pl co.mae [L, hair, fr. Gk kome] (1669) 1: a tufted bunch (as of branches, bracts, or seed hairs)
2: the head of a comet usu. containing a nucleus
3: an optical aberration in which the image of a point source is a comet-shaped blur -- co.mat.ic adj