Prism Meaning

/ˈpɹɪz(ə)m/
C1

Definition, CEFR level C1, pronunciation, examples, and quiz.

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nounA polyhedron with parallel ends of the same polygonal shape and size, the other faces being parallelogram-shaped sides.

nounA polyhedron with parallel ends of the same polygonal shape and size, the other faces being parallelogram-shaped sides., An object having the shape of a geometrical prism (sense 1).

A prism decomposes light.
Light is resolved by a prism into seven colors.
A spectrum is formed by a ray of light passing through a prism.
CEFR Practice Quiz
When white light passes through a glass ____, it separates into a rainbow of colors.
CEFR Practice Quiz (Alternate)
The scientist used a glass ____ to split white light into its component colors of the spectrum.

Etymology tree Ancient Greek πρῑ́ω (prī́ō) Proto-Indo-European *-mn̥ Ancient Greek -μᾰ (-mă) Ancient Greek πρίσμᾰ (prísmă)bor. Late Latin prismalbor. English prism Learned borrowing from Late Latin prisma (“(geometry) prism”), from Ancient Greek πρίσμᾰ (prísmă, “anything sawn; sawdust; (Koine, geometry) prism”), from πρῐ́ζω (prĭ́zō) (a variant of πρῑ́ω (prī́ō, “to saw”), further etymology unknown) + -μᾰ (-mă, suffix forming neuter nouns denoting the effect or result of an action, etc.).

"[page 13] One of theſe Parts [of a piece of black paper] I painted vvith a red Colour and the other vvith a blevv. […] This Paper I vievved through a Priſm of ſolid Glaſs, vvhoſe tvvo Sides through vvhich the Light paſſed to the Eye vvere plane and vvell poliſhed, and contained an Angle of about Sixty Degrees: vvhich Angle I call the refracting Angle of the Priſm. […] [page 17] Theſe Experiments may ſuffice for the Colours of Natural Bodies. For in the Colours made by the Refraction of Priſms this Propoſition vvill appear by the Experiments vvhich are novv to follovv in the next Propoſition." — 1704, I[saac] N[ewton], “[The First Book of Opticks. Part I.] Prop[osition] I. Theor[y] I. Lights which Differ in Colour, Differ also in Degrees of Refrangibility.”, in Opticks: Or, A Treatise of the Reflexions, Refractions, Inflexions and Colours of Light. […], London: […] Sam[uel] Smith, and Benj[amin] Walford, printers to the Royal Society, […], →OCLC, pages 13 and 17:
"Here, avvful [Isaac] Newton, the diſſolving clouds / Form, fronting on the ſun, thy ſhovvery priſm; / And to the ſage-inſtructed eye unfold / The various tvvine of light, by thee diſclos'd / From the vvhite mingling maze." — a. 1749 (date written), James Thomson, “Spring”, in The Seasons, London: […] A[ndrew] Millar, and sold by Thomas Cadell, […], published 1768, →OCLC, page 10, lines 207–211:
"The beams, that thro' the Oriel shine, / Make prisms in every carven glass, […]" — 1842, Alfred Tennyson, “The Day-Dream”, in Poems. […], volume II, London: Edward Moxon, […], →OCLC, page 151:
"I had surveyed the landscape through the prism of poetry, which tinged every object with the hues of the rainbow." — 1820 September 13, Geoffrey Crayon [pseudonym; Washington Irving], “Stratford-on-Avon”, in The Sketch Book of Geoffrey Crayon, Gent., number VII, New York, N.Y.: […] C[ornelius] S. Van Winkle, […], →OCLC, page 87:
"It is a simple fact that many outside the Abu Dhabi-owned club will always view their triumph through the prism of the charges of 115 financial breaches brought against them by the Premier League, charges they fiercely deny." — 2023 June 10, Phil McNulty, “Manchester City 1 – 0 Inter Milan”, in BBC Sport, archived from the original on 10 Apr 2024:

Explore More C1 Vocabulary Words

CEFR Practice Quiz
When white light passes through a glass ____, it separates into a rainbow of colors.
CEFR Practice Quiz (Alternate)
The scientist used a glass ____ to split white light into its component colors of the spectrum.

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