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hormone

(Encyclopedia) hormone, secretory substance carried from one gland or organ of the body via the bloodstream to more or less specific tissues, where it exerts some influence upon the metabolism of the…

Gestalt

(Encyclopedia) GestaltGestaltgəshtältˈ [key] [Ger.,=form], school of psychology that interprets phenomena as organized wholes rather than as aggregates of distinct parts, maintaining that the whole…

hydrothermal vent

(Encyclopedia) hydrothermal vent, crack along a rift or ridge in the deep ocean floor that spews out water heated to high temperatures by the magma under the earth's crust. Some vents are in areas of…

Hoffa, Jimmy

(Encyclopedia) Hoffa, Jimmy (James Riddle Hoffa)Hoffa, Jimmyhôfˈə [key], 1913–75?, U.S. labor leader, b. Brazil, Indiana. As a young warehouseman he organized (1932) a union that was admitted two…

Lusignan

(Encyclopedia) LusignanLusignanlüzēnyäNˈ [key], French noble family. The name is derived from a castle in Poitou, built, according to legend, by Mélusine. The family was powerful in the Middle Ages…

arrest

(Encyclopedia) arrest, in law, seizure and detention of a person, either to bring him before a court body or official, or to otherwise secure the administration of the law. A person may be arrested…

neurotransmitter

(Encyclopedia) neurotransmitter, chemical that transmits information across the junction (synapse) that separates one nerve cell (neuron) from another nerve cell or a muscle. Neurotransmitters are…

Black Lives Matter

(Encyclopedia) Black Lives Matter, a global political movement. Founded in 2013 by organizers Alicia Garza, Patrisse Cullors, and Opal Tometi, the #…

Bowie, David

(Encyclopedia) Bowie, David, 1947–2016, British rock-and-roll singer and songwriter who successfully, merged rock, art, and fashion, b. London as David Robert Jones. After singing with five different…

well

(Encyclopedia) well, aperture in the earth's surface through which substances in a natural underground reservoir, such as water, gas, oil, salt, and sulfur, can flow or be pumped to the surface. In…