Dictionary
Find
in
Dictionary
Thesaurus
Translations

Click to move up the list of words
Columbia Plateau
Columbian
columbine (1)
columbine (2)
columbite
columbium
Columbus
Columbus Day
columella
column
column inch
columnar jointing
columnea
columnist
colure
Colwyn Bay
colza
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

coma (2)

co·ma [ kṓmə ] (plural co·mae [ kṓmee ])


noun 
Definition:
 
1. cloud around head of comet: a luminous cloud of gas and dust surrounding the head of a comet

2. distortion of image: a defect in a lens that produces a blurred, comet-shaped image of a point, or the image produced

[Early 17th century. Via Latin < Greek komē "hair of the head"]

co·mal adjective
Advertisement

© 2009 Microsoft