Breadcrumb Home > Thesaurus > H Synonyms of heterozygote Find synonyms for: Noun1. heterozygote, zygote, fertilized ovumusage: (genetics) an organism having two different alleles of a particular gene and so giving rise to varying offspringWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of heterozygote (Dictionary) ✖ Related Content Daily Word Quiz: guilloche Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language