[ wī′bərn-mā′sən ]
Arteriovenous malformation on the cerebral cortex, retinal arteriovenous angioma, and facial nevus, usually occurring in mentally retarded individuals.
These Common Words Have Some Very Uncommon OppositesYou know up is the opposite of down, but do you know the antonyms of ambidextrous and placebo? English isn't always black and white.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.