Prism
noun
1.
Optics. a transparent solid body, often having triangular bases, used for dispersing light into a spectrum or for reflecting rays of light.
2.
Geometry. a solid having bases or ends that are parallel, congruent polygons and sides that are parallelograms.
3.
Crystallography. a form having faces parallel to the vertical axis and intersecting the horizontal axes.
noun
1.
a transparent polygonal solid, often having triangular ends and rectangular sides, for dispersing light into a spectrum or for reflecting and deviating light. They are used in spectroscopes, binoculars, periscopes, etc
2.
a form of crystal with faces parallel to the vertical axis
3.
(maths) a polyhedron having parallel, polygonal, and congruent bases and sides that are parallelograms
prism (prĭz’əm)
n.
A solid figure whose bases or ends have the same size and shape and are parallel to one another, and each of whose sides is a parallelogram.
A transparent body of this form, often of glass and usually with triangular ends, used for separating white light passed through it into a spectrum or for reflecting beams of light.
Such a body used in testing or correcting imbalance of the extrinsic ocular muscles.
pris·mat’ic (-māt’ĭk) adj.
prism
(prĭz’əm)
A geometric solid whose bases are congruent polygons lying in parallel planes and whose sides are parallelograms.
A solid of this type, often made of glass with triangular ends, used to disperse light and break it up into a spectrum.
A crystal form having 3, 4, 6, 8, or 12 faces parallel to the vertical axis and intersecting the horizontal axis.
prism [(priz-uhm)]
A solid figure in geometry with bases or ends of the same size and shape and sides that have parallel edges. Also, an object that has this shape.
Note: A prism of glass (or a similar transparent material) can be used to bend different wavelengths of light by different amounts through refraction. This bending separates a beam of white light into a spectrum of colored light.
A distributed logic language.
[“PRISM: A Parallel Inference System for Problem Solving”, S. Kasif et al, Proc 1983 Logic Prog Workshop, pp. 123-152].
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