/ Dictionary / Index H his: Meaning and Definition of Find definitions for: his Pronunciation: (hiz unstressed iz), [key] — pron. the possessive form of(used as an attributive or predicative adjective): His coat is the brown one. This brown coat is his. Do you mind his speaking first? that or those belonging to him: His was the cleverest remark of all. I borrowed a tie of his. His Pronunciation: [key] — Biochem. Biochem. histidine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hirundine his-and-her Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language