leukoencephalitis

noun
leu·​ko·​en·​ceph·​a·​li·​tis
variants: or chiefly British leucoencephalitis \ ˌlü-​kō-​in-​ˌsef-​ə-​ˈlīt-​əs How to pronounce leucoencephalitis (audio) \
plural leukoencephalitides\ -​ˈlit-​ə-​ˌdēz How to pronounce leukoencephalitides (audio) \

Medical Definition of leukoencephalitis

: inflammation of the white matter of the brain