/ Dictionary / Index A arthritis: Meaning and Definition of Find definitions for: ar•thri•tis Pronunciation: (är-thrī'tis), [key] — n. acute or chronic inflammation of a joint, often accompanied by pain and structural changes and having diverse causes, as infection, crystal deposition, or injury. Cf. bursitis, gout, osteoarthritis, rheumatoid arthritis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: arthritis (Thesaurus) arthritic arthro- 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