MYELITIS Meaning of MYELITIS in English [ ˌmʌɪə'lʌɪtɪs ]■ noun Medicine inflammation of the spinal cord.OriginC19: mod. L., from Gk muelos 'marrow' + -itis . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004