/ Dictionary / Index A arthrosis: Meaning and Definition of Find definitions for: ar•thro•sis Pronunciation: (är-thrō'sis), [key] — n. junction of two or more bones of the skeleton; joint. ar•thro•sis Pronunciation: (är-thrō'sis), [key] — n. degenerative joint disease. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. arthroscopy arthrospore Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language