1) Being without color 2) Black and white 3) Colorlessness 4) Colourlessness 5) Decoloration 6) Discoloration 7) Etiolation 8) Freedom from color 9) Monochrome 10) Neutral tint 11) Paleness 12) Pallidity 13) Pallidness 14) Pallor 15) Visual property 
• (n.) The state or quality of being achromatic; as, the achromatism of a lens; achromaticity.
(ә-kro´mә-tiz-әm) the quality or the condition of being achromatic. monochromatic vision.
A·chro'ma·tism noun [ Confer French achromatisme .] The state or quality of being achromatic; as, the achromatism of a lens; achromaticity. Nichol. 
Type: Term Pronunciation: ă-krō′mă-tizm Definitions: 1. The quality of being achromatic. 2. The annulment of chromatic aberration by combining glasses of different refractive indexes and different dispersion.
freedom from color. · freedom from chromatic aberration, as in an achromatic lens.