Main Entry: po·lio·en·ceph·a·li·tis Pronunciation: "pO-lE-(")O-in-"sef-&-'lIt-&s Function: noun Inflected Form: pluralpo·lio·en·ceph·a·lit·i·des/-'lit-&-"dEz/ : inflammation of the gray matter of the brain
polioencephalitis po·li·o·en·ceph·a·li·tis (pō'lē-ō-ěn-sěf'ə-lī'tĭs) n. An acute infectious inflammation of the brain's gray matter, either of the cortex or of the central nuclei.