achromatic

adj

Etymology: From Ancient Greek ἀχρωμάτιστος (akhrōmátistos, “uncolored”), from ἀ- (a-, “not”) + χρῶμα (khrôma, “color”), equivalent to a- + chromatic; compare French achromatique.

1. Free from color; transmitting light without color-related distortion.

   “The designer chose an achromatic color scheme of black, white, and gray.”

   “achromatic color scheme”

2. Containing components such as achromatic lenses and prisms, designed to prevent color-related distortion.

   “An achromatic lens reduces color distortion in optical instruments.”

3. Uncolored; not absorbing color from a fluid.
4. Having only the diatonic notes of the scale; not modified by accidentals.