pachyleptomeningitis

noun
pachy·​lepto·​men·​in·​gi·​tis | \ ˌpak-i-ˌlep-tō-ˌmen-ən-ˈjīt-əs How to pronounce pachyleptomeningitis (audio) \
plural pachyleptomeningitides\ -​ˈjit-​ə-​ˌdēz How to pronounce pachyleptomeningitides (audio) \

Medical Definition of pachyleptomeningitis

: simultaneous inflammation of the pia mater and dura mater