Achromatic meaning

ăkrə-mătĭk, ākrə-
Designating color perceived to have zero saturation and therefore no hue, such as neutral grays, white, or black.
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Refracting light without spectral color separation.
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Difficult to stain with standard dyes. Used in reference to cells or tissues.
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Having only the diatonic tones of the scale.
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Colorless; specif., designating or of the group of colors comprising black, white, and gray.
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Refracting white light without breaking it up into its component colors.
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Forming visual images whose outline is free from prismatic colors.

An achromatic lens.

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Without accidentals; diatonic.

An achromatic scale.

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Designating color perceived to have zero saturation and therefore no hue, such as neutral grays, white, or black.
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Refracting light without spectral color separation.
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Difficult to stain with standard dyes. Used in reference to cells or tissues.
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Designating color perceived to have zero saturation and therefore no hue, such as neutral grays, white, or black.
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(optics) Free from color; transmitting light without color-related distortion.
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Containing components such as achromatic lenses and prisms, designed to prevent color-related distortion.
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(biology) Uncolored; not absorbing color from a fluid; -- said of tissue.
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(music) Having only the diatonic notes of the scale; not modified by accidentals.
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Being achromatic in subject.

The lecture was achromatic, the speaker used politics to suppress the weight of his/her subject.

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Origin of achromatic

  • From Greek akhrōmatos a- without a–1 khrōma khrōmat- color

    From American Heritage Dictionary of the English Language, 5th Edition

  • Ancient Greek ἀχρωμάτιστος (akhrōmatistos, “uncolored”), from ἀ- (a-, “alpha privative”) + χρῶμα (khrōma, “color”); compare French achromatique

    From Wiktionary