/ Dictionary / Index H hyperostosis: Meaning and Definition of Find definitions for: hy•per•os•to•sis Pronunciation: (hī"pur-o-stō'sis), [key] — n. Pathol. abnormal development of bony tissue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hyperosteogeny hyperovaria Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language