achromatic, neutral
(adjective) having no hue; “neutral colors like black or white”
Source: WordNet® 3.1
achromatic (comparative more achromatic, superlative most achromatic)
(optics) Free from color; transmitting light without color-related distortion.
Synonym: Thesaurus:achromatic
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
Source: Wiktionary
Ach`ro*mat"ic, a. Etym: [Gr. achromatique.]
1. (Opt.)
Definition: Free from color; transmitting light without decomposing it into its primary colors.
2. (Biol.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition
23 April 2024
(noun) (Roman Catholic Church) an antiphon (usually from the Book of Psalms) immediately after the epistle at Mass
The Boston Tea Party helped popularize coffee in America. The hefty tea tax imposed on the colonies in 1773 resulted in America switching from tea to coffee. In the lead up to the Revolutionary War, it became patriotic to sip java instead of tea. The Civil War made the drink more pervasive. Coffee helped energize tired troops, and drinking it became an expression of freedom.
