achromatic(a = adj.all) neutral - having no hue; "neutral colors like black or white"
Antonym: chromatic
Derived form verb achromatize1
1. Free from color; transmitting light without decomposing it into its primary colors. [1913 Webster]
2. Uncolored; not absorbing color from a fluid; -- said of tissue. [1913 Webster]
achromatic, adj. Optics 1 that transmitts light without separating it into constituent colours (achromatic lens).
2 without colour (achromatic fringe).
Derivative:
achromatically adv. achromaticity n. achromatism n.
Etymology:
F achromatique f. Gk akhromatos (as A-(1), CHROMATIC)
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.
achromatic color, achromatic colour, achromatic lens, achromatic vision