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Definition prism in British English

prism noun

[countable] noun
/ˈprɪz(ə)m/
1

a solid object that has a regular shape and can be cut into slices that all have the same shape. A prism usually has two or more sides shaped like a triangle.

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1.1

a glass object in the shape of a prism, used for dividing light into its different colours

Synonyms and related words
Definition prism in British English