achromatism

== English == === Etymology === Compare French achromatisme. === Noun === achromatism (uncountable) (optics) The state or quality of being achromatic; achromaticity. The state of being free of colors, not emitting or separating into colors. Achromatopia. ==== Translations ==== === References === “achromatism”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC. Dorland's Pocket Medical Dictionary, 22nd edition, W. B. Saunders, 1977