( 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.
( 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.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012