Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “prism”

prism

noun [C]
 
 
/ˈprɪzəm/
an object made of clear glass which separates the light that passes through it into different coloursGlassOptics, microscopy and lasersEyesight, glasses and lenses
(Definition of prism from the Cambridge Learners Dictionary © Cambridge University Press)
Add Cambridge dictionaries to your browser to your website

Definitions of “prism” in other dictionaries

Word of the Day

improvisation

a performance that an actor, musician, etc. has not practised or planned

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More