Definition of Achramatic
Ach`ro*mat"ic (&?;), a. [Gr. &?; colorless;
'a priv. + &?;, &?;, color: cf. F. achromatique.]
1. (Opt.) Free from color; transmitting light
without decomposing it into its primary colors.
2. (Biol.) Uncolored; not absorbing color
from a fluid; -- said of tissue.
Achromatic lens (Opt.), a lens composed
usually of two separate lenses, a convex and concave, of substances having
different refractive and dispersive powers, as crown and flint glass, with
the curvatures so adjusted that the chromatic aberration produced by the
one is corrected by other, and light emerges from the compound lens
undecomposed. -- Achromatic prism. See
Prism. -- Achromatic telescope, or
microscope, one in which the chromatic aberration is
corrected, usually by means of a compound or achromatic object glass, and
which gives images free from extraneous color.
- Webster's Unabridged Dictionary (1913)
- (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."
- The Nuttall Encyclopedia
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