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.
| a chattering or flighty, light-headed person. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |