meningitis Syllabification: (men·in·gi·tis)Pronunciation: /ˌmenənˈjītis/Translate meningitis | into French | into German | into Italian | into Spanish Definition of meningitis noun inflammation of the meninges caused by viral or bacterial infection and marked by intense headache and fever, sensitivity to light, and muscular rigidity, leading (in severe cases) to convulsions, delirium, and death. Derivatives meningiticPronunciation: /-ˈjitik/ adjective meningitis in other Oxford dictionaries Definition of meningitis in the British & World English dictionary