polioencephalitis
/ˌpəʊlɪəʊɛnˌsɛfəˈlʌɪtɪs/ /ˌpəʊlɪəʊɛnˌkɛfəˈlʌɪtɪs/(also poliencephalitis) Medicine
noun
Any of various inflammatory diseases of the grey matter of the brain, especially cerebral poliomyelitis (Wernicke's disease).
Origin
Late 19th century. From German Poliencephalitis from ancient Greek πολιός grey + ἐγκέϕαλος brain + German -itis.