noun, plural poplitei /-ˈlɪtiˌaɪ, -lɪˈtiaɪ/ [-lit-ee-ahy, -li-tee-ahy] Show IPA . Anatomy.
a thin, flat, triangular muscle in back of the knee, the action of which
assists in bending the knee and in rotating the leg toward the body.
equivalent to Latin poplit-
(stem of poples
) knee joint, back of the knee + -eus -eous