IPA: /ˌhɛmɪˈpliːdʒə/
KK: /hɛməˈplidʒə/
A condition where one side of the body is paralyzed, often due to brain injury or disease.
After the stroke, he was diagnosed with hemiplegia, which affected his left side.
Hemiplegia is formed from "hemi-" (meaning half) and "plegia" (from Greek "plege", meaning stroke or blow). The term describes a condition characterized by paralysis affecting one side of the body, hence the meaning half paralysis.
Think of 'half' ('hemi-') and 'stroke' ('plegia') to remember that hemiplegia refers to paralysis on one side of the body.