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achromatism

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WordReference Random House Unabridged Dictionary of American English © 2025

a•chro•ma•tism n. [Optics.]

Opticsfreedom from color.
Opticsfreedom from chromatic aberration, as in an achromatic lens.

Also, achromaticity.

achromat(ic) + -ism 1790–1800

'achromatism' also found in these entries (note: many are not synonyms or translations):

achromatic - achromaticity

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