achromatic
/ˌæk.ɹəˈmæt.ɪk/adj
University
1
Free from color; transmitting light without color-related distortion.
2
Containing components such as achromatic lenses and prisms, designed to prevent color-related distortion.
3
Uncolored; not absorbing color from a fluid.
4
Having only the diatonic notes of the scale; not modified by accidentals.