(physics) colour, such as white, black, and grey, that is devoid of hue see colour (sense 2)
- achromatic lens
a system of two or more lenses that is substantially free from chromatic aberration and in which the lenses are made of different substances so that the focal length of the system is the same for two or three wavelengths of light. historical examples the achromatic lens consists of a double convex lens of crown […]
- achromatic objective
achromatic objective achromatic objective n. an objective that is corrected for two colors chromatically and for one color spherically.
- achromatic prism
a system of two or more prisms of different substances that deflects but does not disperse a beam of light.
- achromatic vision
achromatic vision achromatic vision n. see achromatopsia.
to make ; deprive or free of color. verb (transitive) to make achromatic; to remove colour from