prism

Late Latin prisma, from Ancient Greek πρίσμα (prísma, “something sawed”), from πρίζειν (prízein, “to saw”).

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• IPA^(key): /ˈpɹɪzəm/
• Rhymes: -ɪzəm

prism (plural prisms)

1. (geometry) A polyhedron with parallel ends of the same size and shape, the other faces being parallelogram-shaped sides.
2. A transparent block in the shape of a prism (typically with triangular ends), used to split or reflect light.
3. A crystal in which the faces are parallel to the vertical axis.

• cylinder
• pyramid

• prims