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asphyxia

(Encyclopedia)asphyxia ăsfĭkˈsēə [key], deficiency of oxygen and excess of carbon dioxide in the blood and body tissues. Asphyxia, often referred to as suffocation, usually results from an interruption of brea...

Long Beach

(Encyclopedia)Long Beach. 1 City (1990 pop. 429,433), Los Angeles co., S Calif., on San Pedro Bay; est. 1882 as Willmore City, inc. 1888 as Long Beach. Having an excellent harbor, it serves as one of Los Angeles's ...

pass

(Encyclopedia)pass, opening or way by which a natural or artificial barrier can be crossed. The term pass is usually applied to a relatively narrow passage through a mountainous region. A pass, like an isthmus, may...

twilight

(Encyclopedia)twilight, period between sunset and total darkness or between total darkness and sunrise. Total darkness does not occur immediately when the sun sinks below the horizon because light from the sun that...

Boucher, François

(Encyclopedia)Boucher, François fräNswäˈ bo͞oshāˈ [key], 1703–70, French painter. Boucher's art embodied the spirit of his time; it was elegant, frivolous, and artificial. He studied briefly with François...

surrogate mother

(Encyclopedia)surrogate mother, a woman who agrees, usually by contract and for a fee, to bear a child for a couple who are childless because the wife is infertile or physically incapable of carrying a developing f...

synthetic textile fibers

(Encyclopedia)synthetic textile fibers have revolutionized the textile industry. Such artificial fibers are usually long-chain polymers, produced industrially by the condensation of many small units. Orlon is the t...

selection

(Encyclopedia)selection. In Darwinism, the mechanism of natural selection is considered of major importance in the process of evolution. Popular formulations sometimes envisage a struggle for existence in which dir...

drone

(Encyclopedia)drone or remotely piloted vehicle, a pilotless craft guided by remote control. Aircraft, ships, and land vehicles can be designed or outfitted as drones. Underwater vessels—both piloted and pilotles...

carbon monoxide

(Encyclopedia)carbon monoxide, chemical compound, CO, a colorless, odorless, tasteless, extremely poisonous gas that is less dense than air under ordinary conditions. It is very slightly soluble in water and burns ...