poliomyelitis

noun

Etymology: Borrowed from German Poliomyelitis, from the Ancient Greek πολιός (poliós, “grey”) + μυελός (muelós, “marrow”) + -ῖτις (-îtis, “-itis”). Compare French poliomyélite.

1. Acute infection by the poliovirus, especially of the motor neurons in the spinal cord and brainstem, leading to muscle weakness, paralysis and sometimes deformity.