n. An ancient defensive armor composed of scales of metal or other material sewed to a garment of leather or stuff, and covering often the whole body and the limbs, but not the head, upon which a helmet of another material was placed.n. In zoology, the armor of plates or strong scales protecting some animals.Fenced in; provided with bulwarks or a protecting covering; covered; protected: as, a cataphract war-galley.Same as cataphracted.