achromatic
/,ækrou'mætik/
Definition
- Adjective:
- Having no hue; being neutral in color: Describes something that lacks color or is colorless, specifically referring to pure neutral tones like black, white, and shades of gray.
- Transmitting light without spectral color separation: In optics, describes a lens or device that does not separate white light into its constituent colors, thus minimizing chromatic aberration.
Usage Examples
- Adjective:
- The artist preferred an achromatic palette of black, white, and gray for the abstract painting.
- A high-quality achromatic lens is designed to focus different colors of light to the same point, reducing color fringing.
Advanced Usage
- "Achromatic vision": A medical or biological term for complete color blindness, where one sees only in shades of gray.
- The condition of achromatic vision, or monochromacy, is very rare.
- "Achromatic interval": In physiology, the range of light intensity where the cones in the eye are not stimulated, so only rods (which don't detect color) are active, resulting in a lack of color perception.
- In very dim light, we see within the achromatic interval.
Variants and Related Words
- Achromatism (noun): The state or condition of being achromatic; in optics, the correction of a lens so it is free of chromatic aberration.
- The achromatism of the telescope's objective lens was critical for clear astronomical observation.
- Achromatize (verb): To render achromatic; to remove color from.
- The process aimed to achromatize the stained fabric.
Synonyms
- Colorless: Having no color.
- Neutral: (In color theory) A color without hue, such as black, white, or gray.
- Monochrome: Consisting of or displaying images in black, white, and shades of gray.
Antonyms
- Chromatic: Relating to or produced by color; having color or hues.
- Colorful: Having many or bright colors.
- Polychromatic: Showing a variety or a change of colors.
Related Phrases / Compound Terms
- Achromatic color: A color that possesses no hue, such as black, white, or gray.
- In design, achromatic colors are often used to create a sense of sophistication.
- Achromatic doublet: A type of lens made from two pieces of glass with different dispersion properties, designed to cancel out chromatic aberration.
- The microscope uses an achromatic doublet for a clearer, color-accurate image.
Adjective
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having no hue
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neutral colors like black or white
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