/ Dictionary / Index P prostatitis: Meaning and Definition of Find definitions for: pros•ta•ti•tis Pronunciation: (pros"tu-tī'tis), [key] — n. Pathol. inflammation of the prostate gland. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prostatitis (Thesaurus) prostatism prosternum Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language