Word Study
achromatism
CIDE DICTIONARY
achromatism, n. [Cf. F. achromatisme.].
The state or quality of being achromatic; as, the achromatism of a lens; achromaticity. Nichol. [1913 Webster]
ROGET THESAURUS
achromatism
Achromatism
N achromatism, decoloration, discoloration, pallor, pallidness, pallidity, paleness, etiolation, neutral tint, monochrome, black and white, uncolored &c (color), colorless, achromatic, aplanatic, etiolate, etiolated, hueless, pale, pallid, palefaced, tallow-faced, faint, dull, cold, muddy, leaden, dun, wan, sallow, dead, dingy, ashy, ashen, ghastly, cadaverous, glassy, lackluster, discolored, light-colored, fair, blond, white, pale as death, pale as ashes, pale as a witch, pale as a ghost, pale as a corpse, white as a corpse.For further exploring for "achromatism" in Webster Dictionary Online