/ Dictionary / Index O osteopetrosis: Meaning and Definition of Find definitions for: os•te•o•pe•tro•sis Pronunciation: (os"tē-ō-pi-trō'sis), [key] — n. Pathol. any of several hereditary diseases characterized by increased bone density. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: osteopetrosis (Thesaurus) osteopathy osteophyte Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language