I. Fallen down, prostrate (post-Aug.): “salix procidua,” Plin. 16, 32, 57, § 133; Stat. Th. 3, 127; Sid. Carm. 23, 415.—
II. Of parts of the body, falling down or forwards, prociduous: “sedes,” Plin. 21, 20, 87, § 151: “umbilicus,” id. 20, 20, 81, § 211.