/ Thesaurus / M Synonyms of macrencephaly Find synonyms for: Noun1. macrencephaly, abnormality, abnormalcyusage: an abnormally large braincaseWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language