The Collaborative International Dictionary of English v.0.48:
Hemiplegia \Hem`i*ple"gi*a\, n.[NL., fr. Gr. ?; ? half + ? a stroke; cf. F. h['e]miplagie.] (Med.) A palsy that affects one side only of the body. -- Hem`i"pleg"ic, a. [1913 Webster]WordNet (r) 3.0 (2006):
hemiplegia n 1: paralysis of one side of the body [syn: hemiplegia, unilateral paralysis]