Definify.com
Webster 1913 Edition
Comedo
‖
Com′e-do
,Noun.
pl.
Comedones
(#)
. [L., a glutton. See
Comestible
.] (Med.)
A small nodule or cystic tumor, common on the nose, etc., which on pressure allows the escape of a yellow wormlike mass of retained oily secretion, with a black head (dirt).