(n) :
a polyhedron with parallel ends of the same size and shape, the other faces being parallelogram-shaped sides; a transparent block in the shape of a prism (typically with triangular ends), used to split or reflect light
(n) :
a polyhedron with parallel ends of the same size and shape, the other faces being parallelogram-shaped sides; a transparent block in the shape of a prism (typically with triangular ends), used to split or reflect light