Definition of blue

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Blue (superl.) Low in spirits; melancholy; as, to feel blue..

Lern More About Blue

Violaniline :: Violaniline (n.) A dyestuff of the induline group, made from aniline, and used as a substitute for indigo in dyeing wool and silk a violet-blue or a gray-blue color..
Bluecap :: Bluecap (n.) The blue bonnet or blue titmouse.
Indirubin :: Indirubin (n.) A substance isomeric with, and resembling, indigo blue, and accompanying it as a side product, in its artificial production..
Sunfish :: Sunfish (n.) Any one of numerous species of perch-like North American fresh-water fishes of the family Centrachidae. They have a broad, compressed body, and strong dorsal spines. Among the common species of the Eastern United States are Lepomis gibbosus (called also bream, pondfish, pumpkin seed, and sunny), the blue sunfish, or dollardee (L. pallidus), and the long-eared sunfish (L. auritus). Several of the species are called also pondfish..
Squill :: Squill (n.) Any bulbous plant of the genus Scilla; as, the bluebell squill (S. mutans)..
Emeraldine :: Emeraldine (n.) A green compound used as a dyestuff, produced from aniline blue when acted upon by acid..
Bluestockingism :: Bluestockingism (n.) The character or manner of a bluestocking; female pedantry.
Chicory :: Chicory (n.) A branching perennial plant (Cichorium Intybus) with bright blue flowers, growing wild in Europe, Asia, and America; also cultivated for its roots and as a salad plant; succory; wild endive. See Endive..
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..
Litmus :: Litmus (n.) A dyestuff extracted from certain lichens (Roccella tinctoria, Lecanora tartarea, etc.), as a blue amorphous mass which consists of a compound of the alkaline carbonates with certain coloring matters related to orcin and orcein..
Cyanogen :: Cyanogen (n.) A colorless, inflammable, poisonous gas, C2N2, with a peach-blossom odor, so called from its tendency to form blue compounds; obtained by heating ammonium oxalate, mercuric cyanide, etc. It is obtained in combination, forming an alkaline cyanide when nitrogen or a nitrogenous compound is strongly ignited with carbon and soda or potash. It conducts itself like a member of the halogen group of elements, and shows a tendency to form complex compounds. The name is also applied to the u
Violet :: Violet (n.) In art, a color produced by a combination of red and blue in equal proportions; a bluish purple color..
Blue :: Blue (superl.) Severe or over strict in morals; gloom; as, blue and sour religionists; suiting one who is over strict in morals; inculcating an impracticable, severe, or gloomy mortality; as, blue laws..
Yaup :: Yaup (n.) The blue titmouse.
Sticktail :: Stick-seed (n.) A plant (Echinospermum Lappula) of the Borage family, with small blue flowers and prickly nutlets..
Bluestocking :: Bluestocking (n.) The American avocet (Recurvirostra Americana).
Forget-me-not :: Forget-me-not (n.) A small herb, of the genus Myosotis (M. palustris, incespitosa, etc.), bearing a beautiful blue flower, and extensively considered the emblem of fidelity..
Blae :: Blae (a.) Dark blue or bluish gray; lead-colored.
Vair :: Vair (n.) The skin of the squirrel, much used in the fourteenth century as fur for garments, and frequently mentioned by writers of that period in describing the costly dresses of kings, nobles, and prelates. It is represented in heraldry by a series of small shields placed close together, and alternately white and blue..
Indigo :: Indigo (n.) A blue dyestuff obtained from several plants belonging to very different genera and orders; as, the woad, Isatis tinctoria, Indigofera tinctoria, I. Anil, Nereum tinctorium, etc. It is a dark blue earthy substance, tasteless and odorless, with a copper-violet luster when rubbed. Indigo does not exist in the plants as such, but is obtained by decomposition of the glycoside indican..
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