/ Dictionary / Index H heterosexuality: Meaning and Definition of Find definitions for: het•er•o•sex•u•al•i•ty Pronunciation: (het"ur-u-sek"sh-al'i-tē or, esp. Brit., -seks"y-), [key] — n. sexual feeling or behavior directed toward a person or persons of the opposite sex. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: heterosexuality (Thesaurus) heterosexual heterosis Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language