- Being achromatic in subject
"The lecture was achromatic, the speaker used politics to suppress the weight of his/her subject."
- (optics) Free from color; transmitting light without color-related distortion.
- (music) Having only the diatonic notes of the scale; not modified by accidentals.
- (biology) Uncolored; not absorbing color from a fluid; -- said of tissue
- Containing components such as achromatic lenses and prisms, designed to prevent color-related distortion.