/ Thesaurus / M Synonyms of macrencephalic Find synonyms for: Adjective1. macrencephalic, macrencephaloususage: having a large brain caseWordNet 3.0 Copyright 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: dentifrice Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language