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cyano group

(Encyclopedia)cyano group sīˈənō, sī-ănˈō [key], in chemistry, functional group that consists of a carbon atom joined to a nitrogen atom by a triple bond; it can be joined to an atom or another group by a s...

benzene

(Encyclopedia)benzene bĕnˈzēn, bĕnzēnˈ [key], colorless, flammable, toxic liquid with a pleasant aromatic odor. It boils at 80.1℃ and solidifies at 5.5℃. Benzene is a hydrocarbon, with formula C6H6. The s...

saturation, of an organic compound

(Encyclopedia)saturation, of an organic compound, condition occurring when its molecules contain no double or triple bonds and thus cannot undergo addition reactions. For example, ethane (H3C–CH3) is a saturated ...

Dove, Arthur Garfield

(Encyclopedia)Dove, Arthur Garfield dŭv [key], 1880–1946, American painter, b. Canandaigua, N.Y. Early in his career he did commercial illustration in New York City. Following a European trip (1907–9), he adop...

welding

(Encyclopedia)welding, process for joining separate pieces of metal in a continuous metallic bond. Cold-pressure welding is accomplished by the application of high pressure at room temperature; forge welding (forgi...

Horsley, Sir Victor Alexander Haden

(Encyclopedia)Horsley, Sir Victor Alexander Haden, 1857–1916, English surgeon and neurologist. A specialist in surgery of the endocrine glands and the nervous system, he devised a noted operation for spinal-cord ...

couvade

(Encyclopedia)couvade ko͞ovädˈ [key], imitation by the father of many of the concomitants of childbirth, at the time of his wife's parturition. The father may retire into seclusion as well as observe various tab...

Klein, Calvin Richard

(Encyclopedia)Klein, Calvin Richard klīn [key], 1942–, American fashion designer, b. New York City. In 1968 he established Calvin Klein Limited, which produced clothes and accessories bearing his hallmark of sim...

Head, Sir Edmund Walker

(Encyclopedia)Head, Sir Edmund Walker, 1805–68, British governor-general of Canada (1854–61), cousin of Sir Francis Bond Head. An Oxford scholar and tutor, he published several books. His success as lieutenant ...

Leigh-Mallory, George Herbert

(Encyclopedia)Leigh-Mallory, George Herbert: see Mallory, George Herbert Leigh. ...