prism

noun

ˈpri-zəm 

1

: a polyhedron with two polygonal faces lying in parallel planes and with the other faces parallelograms

2

a

: a transparent body that is bounded in part by two nonparallel plane faces and is used to refract or disperse a beam of light

b

: a prism-shaped decorative glass luster

3

: a crystal form whose faces are parallel to one axis

especially : one whose faces are parallel to the vertical axis

4

: a medium that distorts, slants, or colors whatever is viewed through it

Examples of prism in a Sentence

Recent Examples on the Web

Despite being steeped in the sadness and frustration of the working class, Lee’s drama uses its film-within-a-film construct to refract the moral valences of labor through the prism of what people actually earn through their work. — David Ehrlich, IndieWire, 6 Sep. 2026

But perhaps inaccuracy is the best prism with which to interpret Davis’ public statements. — Jeff Weiss, HollywoodReporter, 5 Sep. 2026

Now, games like Friday’s 5-2 loss to the division-leading Atlanta Braves are viewed through the prism of the playoffs. — Matt Gelb, New York Times, 5 Sep. 2026

Genuine crystal normally forms a prism of rays when held up to a light source, whereas glass lets light pass through without a colorful effect. — Jennifer Prince, Southern Living, 18 Aug. 2026

Word History

Etymology

Late Latin prismat-, prisma, from Greek, literally, anything sawn, from priein to saw

First Known Use

1570, in the meaning defined at sense 1

Rhymes for prism

• abolitionism
• aldosteronism
• americanism
• anticommunism
• antisemitism
• antiterrorism
• bioterrorism
• colloquialism
• colonialism
• consequentialism
• contextualism
• conventionalism

Kids Definition

prism

noun

ˈpriz-əm 

1

: a polyhedron with two opposite ends that are parallel polygons and faces that are each parallelograms

2

: a transparent object that usually has three sides and bends light so that it breaks up into rainbow colors

Medical Definition

prism

noun

ˈpriz-əm 

1

: a polyhedron with two polygonal faces lying in parallel planes and with the other faces parallelograms

2

: a transparent body that is bounded in part by two nonparallel plane faces and is used to refract or disperse a beam of light

3

: a crystal form whose faces are parallel to one axis

especially : one whose faces are parallel to the vertical axis