Hypertext Webster Gateway: "parallelopiped"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Parallelopiped \Par`al*lel`o*pi"ped\, n. [Gr. ? a body with
parallel surfaces; ? parallel + ? a plane surface, ? on the
ground, or level with it, level, flat; ? on + ? the ground:
cf. F. parall['e]lopip[`e]de.] (Geom.)
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.
From WordNet (r) 1.7 (wn)
parallelopiped
n : a prism whose bases are parallelograms [syn: {parallelepiped},
{parallelepipedon}, {parallelopipedon}]
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