ach·ro·mat·ic (ăkrə-mătĭk)
adj.
► Designating color perceived to have zero saturation and therefore no hue, such as neutral grays, white, or black.
► Refracting light without spectral color separation.
► Biology. Difficult to stain with standard dyes. Used in reference to cells or tissues.
► Music. Having only the diatonic tones of the scale.

[TahlilGaran] American Dictionary ▲

achromatic
[From Greek akhrōmatos : a-, without; see a-¹ + khrōma, khrōmat-, color.]

[TahlilGaran] American Dictionary ▲

achromatic
achro·mati·cal·ly adv.
a·chroma·tism (ā-krōmə-tĭzəm) or a·chroma·tici·ty (-tĭsĭ-tē) n.

[TahlilGaran] American Dictionary ▲