Definify.com
Webster 1913 Edition
Achromatic
Achˊro-mat′ic
,Adj.
[Gr.
ἀχρώματοσ
colorless; ἀ
priv. + χρῶμα
, χρώματος
, 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 1828 Edition
Achromatic
ACHROMAT'IC
,Adj.
Destitute of color. achromatic telescopes are formed of a combination of lenses, which separate the variously color rays of light to equal angles of divergence, at different angles of refraction of the mean ray. In this case, the rays being made to refract towards contrary parts, the whole ray is caused to deviate from its course, without being separated into colors, and the optical aberration arising from the various colors of light, is prevented. This telescope is an invention of Dolland.
Definition 2024
achromatic
achromatic
English
Adjective
achromatic (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.
Related terms
- achromaticity
- achromatism
- achromatic lens
- achromatic prism
- chromatic
Translations
optics: free from colour
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biology: uncoloured
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music: having only the diatonic notes of the scale
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being achromatic in subject