Meaning of PRISM in English

ˈprizəm noun

( -s )

Etymology: Late Latin prisma, from Greek, anything sawn, prism, from priein to saw pristēs saw; akin to Greek pristis sawfish and perhaps to Albanian priš to break, spoil


a. : a polyhedron having two faces that are polygons in parallel planes while the other faces are parallelograms — see volume table

b. : something shaped like such a solid figure ; specifically : the volume of water in a stream in motion considered as a prism of chosen length in conjunction with the cross section of the channel


a. : a transparent body bounded in part by two plane faces that are not parallel used to deviate or disperse a beam of light

b. : an electric or magnetic field similarly used for a beam of electrons

c. : something that refracts light or produces an effect suggestive of a spectrum ; specifically : a more or less prism-shaped decorative glass luster (as for a chandelier)


a. : a crystal form whose faces are parallel to one axis ; specifically : one whose faces are parallel to the vertical axis — compare dome

b. : a crystal form whose number of faces is three or more and whose intersection edges are all parallel

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.