achromatic
Pronunciation:
/ˌækɹəʊˈmæt.ɪk/adjective
Definitions
Free from color; transmitting light without color-related distortion.
Containing components such as achromatic lenses and prisms, designed to prevent color-related distortion.
Uncolored; not absorbing color from a fluid; -- said of tissue
Having only the diatonic notes of the scale; not modified by accidentals.