(Encyclopedia) embryo screening, procedure (see genetic testing) in which a single cell is removed from an embryo two or three days after it has been conceived through in vitro fertilization and…
(Encyclopedia) spring, in geology, natural flow of water from the ground or from rocks, representing an outlet for the water that has accumulated in permeable rock strata underground. Some of the…
(Encyclopedia) Allais, Maurice Félix CharlesAllais, Maurice Félix Charlesmôrēsˈ shärl älĕˈ [key], 1911–2010, French economist, Ph.D. Univ. of Paris, 1949. After working in the French mine…
(Encyclopedia) cross-laminated timber (CLT), manufactured wood panels that consist of layers of boards glued together under pressure with the grain of the boards in one layer running perpendicular to…
(Encyclopedia) copperhead, poisonous snake, Ancistrodon contortrix, of the E United States. Like its close relative, the water moccasin, the copperhead is a member of the pit viper family and detects…
(Encyclopedia) Constantine I, 1868–1923, king of the Hellenes, eldest son of George I, whom he succeeded in 1913. Married to Sophia, sister of the German emperor William II, he opposed the pro-Allied…
(Encyclopedia) fiduciaryfiduciaryfĭd&oomacr;ˈshēĕˌrē [key], in law, a person who is obliged to discharge faithfully a responsibility of trust toward another. Among the common fiduciary…
(Encyclopedia) Hastings, city and district, East Sussex, SE England. A resort and residential city, Hastings is backed by cliffs and has a 3-mi (4.8-km…
(Encyclopedia) half-life, measure of the average lifetime of a radioactive substance (see radioactivity) or an unstable subatomic particle. One half-life is the time required for one half of any…
(Encyclopedia) Green, Thomas Hill, 1836–82, English idealist philosopher. Educated at Oxford, he was associated with the university all his life. He was professor of moral philosophy there from 1878…
