Parallelepi'ped (Gr. parallelepipedon), a solid figure having six faces, the faces being invariably parallelograms, and any two opposite faces equal, similar, and parallel. If the faces are all squares, and consequently equal, the parallel-piped becomes a cube.
Parallelepi'ped
Chambers's Encyclopaedia, Volume 7: Maltebrun to Pearson, p. 753
Source scan(s): p. 0768