Comby's sign

[ kŏm-bēz, kôɴ- ]

n.

An early indication of measles in which thin whitish patches appear on the gums and buccal mucous membrane.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.