What is the state or quality of being achromatic; as, the achromatism of a lens; achromaticity. Nichol called?
achromatism — The state or quality of being achromatic; as, the achromatism of a lens; achromaticity. Nichol. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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