/ Dictionary / Index M meningitis: Meaning and Definition of Find definitions for: men•in•gi•tis Pronunciation: (men"in-jī'tis), [key] — n. Pathol. inflammation of the meninges, esp. of the pia mater and arachnoid, caused by a bacterial or viral infection and characterized by high fever, severe headache, and stiff neck or back muscles. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: meningitis (Thesaurus) meningioma meningocele Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language