
1) Parallelepiped 2) Parallelepipedon 3) Parallelopipedon 4) Prism
Found on
https://www.crosswordclues.com/clue/parallelopiped

• (n.) A solid, the faces of which are six parallelograms, the opposite pairs being parallel, and equal to each other; a prism whose base is a parallelogram.
Found on
http://thinkexist.com/dictionary/meaning/parallelopiped/

<geometry> A solid, the faces of which are six parallelograms, the opposite pairs being parallel, and equal to each other; a prism whose base is a parallelogram. ... Origin: Gr. A body with parallel surfaces; parallel + a plane surface, on the ground, or level with it, level, flat; on + the ground: cf. F. Parallelopipede. ... Source: Websters...
Found on
http://www.encyclo.co.uk/local/20973
Par`al·lel`o·pi'ped noun [ Greek ... a body with parallel surfaces; ... parallel + ... a plane surface, ... on the ground, or level with it, level, flat; ... on + ... the ground: confer French
parallélopipède .]
(Geom.) A solid, the faces of which are six parallelograms, the opposite pai...
Found on
http://www.encyclo.co.uk/webster/P/19

A parallelopiped is a regular rectangular solid figure whose faces are parallelograms.
Found on
http://www.probertencyclopaedia.com/browse/GP.HTM
No exact match found.