Definition of blue

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Blue (n.) One of the seven colors into which the rays of light divide themselves, when refracted through a glass prism; the color of the clear sky, or a color resembling that, whether lighter or darker; a pigment having such color. Sometimes, poetically, the sky..

Lern More About Blue

Neutral :: Neutral (a.) Having neither acid nor basic properties; unable to turn red litmus blue or blue litmus red; -- said of certain salts or other compounds. Contrasted with acid, and alkaline..
In- :: In- (prep.) A prefix from Eng. prep. in, also from Lat. prep. in, meaning in, into, on, among; as, inbred, inborn, inroad; incline, inject, intrude. In words from the Latin, in- regularly becomes il- before l, ir- before r, and im- before a labial; as, illusion, irruption, imblue, immigrate, impart. In- is sometimes used with an simple intensive force..
Harebell :: Harebell (n.) A small, slender, branching plant (Campanula rotundifolia), having blue bell-shaped flowers; also, Scilla nutans, which has similar flowers; -- called also bluebell..
Sapphire :: Sapphire (n.) The color of the gem; bright blue.
Water Sapphire :: Water sapphire () A deep blue variety of iolite, sometimes used as a gem; -- called also saphir d'eau..
Gentianella :: Gentianella (n.) A kind of blue color.
Blueback :: Blueback (n.) A trout (Salmo oquassa) inhabiting some of the lakes of Maine.
Sanders-blue :: Sanders-blue (n.) See Saunders-blue.
Bonito :: Bonito (n.) The skipjack (Sarda Mediterranea) of the Atlantic, an important and abundant food fish on the coast of the United States, and (S. Chilensis) of the Pacific, and other related species. They are large and active fishes, of a blue color with black oblique stripes..
Turquois :: Turquois (n.) A hydrous phosphate of alumina containing a little copper; calaite. It has a blue, or bluish green, color, and usually occurs in reniform masses with a botryoidal surface..
Bluestocking :: Bluestocking (n.) The American avocet (Recurvirostra Americana).
Nymphaea :: Nymphaea (n.) A genus of aquatic plants having showy flowers (white, blue, pink, or yellow, often fragrant), including the white water lily and the Egyptia lotus..
Indigotin :: Indigotin (n.) See Indigo blue, under Indigo..
Cyanosite :: Cyanosite (n.) Native sulphate of copper. Cf. Blue vitriol, under Blue..
Bluestone :: Bluestone (n.) A grayish blue building stone, as that commonly used in the eastern United States..
Verditer :: Verditer (n.) Either one of two pigments (called blue verditer, and green verditer) which are made by treating copper nitrate with calcium carbonate (in the form of lime, whiting, chalk, etc.) They consist of hydrated copper carbonates analogous to the minerals azurite and malachite..
"""blue Book " :: Blue book () The United States official Biennial Register..
Greenfish :: Greenfish (n.) See Bluefish, and Pollock..
Cyanin :: Cyanin (n.) The blue coloring matter of flowers; -- called also anthokyan and anthocyanin.
Cerulific :: Cerulific (a.) Producing a blue or sky color.
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