hydromeningitis

noun
hy·​dro·​men·​in·​gi·​tis | \ ˌhī-drō-ˌmen-ən-ˈjīt-əs How to pronounce hydromeningitis (audio) \
plural hydromeningitides\ -​ˈjit-​ə-​ˌdēz How to pronounce hydromeningitides (audio) \

Medical Definition of hydromeningitis

: meningitis with serous effusion