/ Dictionary / Index H heterozygosis: Meaning and Definition of Find definitions for: het•er•o•zy•go•sis Pronunciation: (het"u-rō-zī-gō'sis), [key] — n. Biol. the state of being a heterozygote. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. heterotypic heterozygote Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language