chalazion

WORDNET DICTIONARY

chalazion(n = noun.state) meibomian cyst - a small sebaceous cyst of the eyelid resulting when a Meibomian gland is blocked;

is a kind of pilar cyst, sebaceous cyst, steatocystoma, wen

chalazion, n. [NL., fr. Gr. dim. of hail, pimple.].

A small circumscribed tumor of the eyelid caused by retention of secretion, and by inflammation of the Melbomian glands. [1913 Webster]