Parallelopiped vs. Parallelepiped

Parallelopipednoun

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.

Parallelopipednoun

a prism whose bases are parallelograms

Parallelepipednoun

(geometry) A solid figure, having six faces, all parallelograms; all opposite faces being similar and parallel.

Parallelepipednoun

A prism whose bases are parallelograms.

Parallelepipednoun

a prism whose bases are parallelograms

Parallelepiped

In geometry, a parallelepiped is a three-dimensional figure formed by six parallelograms (the term rhomboid is also sometimes used with this meaning). By analogy, it relates to a parallelogram just as a cube relates to a square.