achromatism
nounEtymology Compare French achromatisme.
1
Engineering, Natural sciences, Optics, Physical sciences, Physics The state or quality of being achromatic; achromaticity.
- the achromatism of a lens
2
The state of being free of colors, not emitting or separating into colors.
- No flaming flower relieved its black achromatism although that tree had been known long ago to burst open with a three-hour glory.1946, Mervyn Peake, “Mrs Slagg by Moonlight”, in Titus Groan, London: Eyre & Spottiswoode:
3
Achromatopia.