Entry 1 sense Webster, 1913 Hemiplegia /hĕmˌ-əp-lēj'-ē-ə/ · Hem·i·ple·gi·a · IPA /ˌhem.ɪˈpli.dʒə/ 01 n. A palsy that affects one side only of the body. 1. A palsy that affects one side only of the body.(Med.)