pneumoencephalitis

noun
pneu·​mo·​en·​ceph·​a·​li·​tis | \ ˌn(y)ü-mō-in-ˌsef-ə-ˈlīt-əs How to pronounce pneumoencephalitis (audio) \
plural pneumoencephalitides\ -​ˈlit-​ə-​ˌdēz How to pronounce pneumoencephalitides (audio) \

Medical Definition of pneumoencephalitis