- colorless; specif., designating or of the group of colors comprising black, white, and gray
- refracting white light without breaking it up into its component colors
- forming visual images whose outline is free from prismatic colors: an achromatic lens
- staining poorly with the usual stains
- made of achromatin
- Music without accidentals; diatonic: an achromatic scale
Origin of achromaticClassical Greek achr?matos ; from a-, without + chr?ma, color (see chrome) + -ic
- 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.
Origin of achromaticFrom Greek akhr&omacron;matos : a-, without; see a–1 + khr&omacron;ma, khr&omacron;mat-, color.
(comparative more achromatic, superlative most achromatic)
- (optics) Free from color; transmitting light without color-related distortion.
- Containing components such as achromatic lenses and prisms, designed to prevent color-related distortion.
- (biology) Uncolored; not absorbing color from a fluid; -- said of tissue
- (music) Having only the diatonic notes of the scale; not modified by accidentals.
- Being achromatic in subject
- The lecture was achromatic, the speaker used politics to suppress the weight of his/her subject.
Ancient Greek ἀχρωμάτιστος (akhrōmatistos, “uncolored”), from ἀ- (a-, “alpha privative”) + χρῶμα (khrōma, “color”); compare French achromatique