endometrioma

[ ĕn′dō-mē′trē-ōmə ]

n.

A circumscribed mass of endometrial tissue occurring outside the uterus in endometriosis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.