/ Dictionary / Index A appendicitis: Meaning and Definition of Find definitions for: ap•pen•di•ci•tis Pronunciation: (u-pen"du-sī'tis), [key] — n. Pathol. inflammation of the vermiform appendix. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: appendicitis (Thesaurus) appendicectomy appendicle Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language