achromat

(redirected from achromate)
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Related to achromate: chromate

achromat

(ˈækrəˌmæt)
n
1. (General Physics) Also called: achromatic lens a lens designed to bring light of two chosen wavelengths to the same focal point, thus reducing chromatic aberration. Compare apochromat
2. (Medicine) a person who has no colour vision at all and can distinguish only black, white, and grey. The condition is very rare