1 achromatic prism | Definition of achromatic prism
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achromatic prism

noun

Definition of achromatic prism

: a prism made by combining two or more prisms of different refractive index so designed and placed that a ray of white or other nonhomogeneous light passing through the prism is deviated but not dispersed into a spectrum — compare amici prism

First Known Use of achromatic prism

1802, in the meaning defined above

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