/ Thesaurus / P Synonyms of polysomy Find synonyms for: Noun1. polysomy, birth defect, congenital anomaly, congenital defect, congenital disorder, congenital abnormalityusage: congenital defect of having one or more extra chromosomes in somatic cellsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: respite Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language