Pār'al-lël'o-pī'ped, n.

(Synop., §130), n. [Fr. parallélépipède, Sp. parallelepípedo, It. parallelipipedo, Gr. παραλληλεπίπεδον, a body with parallel surfaces, fr. παράλληλος, parallel, and ἐπίπεδον, Parallelepiped, a plane surface, from ἐπίπεδον, on the ground, or on a level with it, level, flat, from ἐπί, on, and πέδον, the ground.] (Geom.) A regular solid, the faces of which are six parallelograms, the opposite ones being parallel, and equal to each other; a prism whose base is a parallelogram.