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James, Saint (St. James the Less)

(Encyclopedia)James, Saint, in the Bible, one of the Twelve Apostles, called St. James the Less or St. James the Little. He was the son of Alphaeus; his mother, Mary, was one of those at the cross and tomb. The Wes...

electronegativity

(Encyclopedia)electronegativity ĭlĕkˌtrōnĕgətĭvˈətē [key], in chemistry, tendency for an atom to attract a pair of electrons that it shares with another atom (see chemical bond). For example, the molecule...

Ryder, Donald P.

(Encyclopedia)Ryder, Donald P., , 1926-2021, African-American architect, b. Springfield, Oh., Univ. of Illinois (BA, 1951). Ryder was raised in Dayton, Ohio. He serve...

organometallic chemistry

(Encyclopedia)organometallic chemistry, the reactions and use of a class of compounds (R-M) that contain a covalent bond between carbon and metal. They are prepared either by direct reaction of the metal with an or...

Grignard reagent

(Encyclopedia)Grignard reagent grēnyärdˈ rēāˈjənt [key], any of an important class of extremely reactive chemical compounds used in the synthesis of hydrocarbons, alcohols, carboxylic acids, and other compou...

carboxyl group

(Encyclopedia)carboxyl group kärbŏkˈsĭl [key], in chemistry, functional group that consists of a carbon atom joined to an oxygen atom by a double bond and to a hydroxyl group, OH, by a single bond. Carboxylic a...

Connery, Sean

(Encyclopedia) Connery, Sean, 1930-2020, Scottish film actor, b. Edinburgh, Scotland. Connery joined the Royal Navy in 1946, serving for three years until he was dis...

Dewar, Sir James

(Encyclopedia)Dewar, Sir James dyo͞oˈər [key], 1842–1923, British chemist and physicist, b. Scotland. He was professor of chemistry (from 1877) at the Royal Institution, London, and later was director of the D...

Dillard, James Hardy

(Encyclopedia)Dillard, James Hardy dĭlˈərd [key], 1856–1940, American educator, b. Nansemond co., Va., grad. Washington and Lee Univ., 1876. Professor (1891–1907) of Latin at Tulane, where he was also dean (...

Durant, William James

(Encyclopedia)Durant, William James, 1885–1981, American historian and essayist, b. North Adams, Mass. He received his Ph.D. from Columbia in 1917 and published his doctoral dissertation, Philosophy and the Socia...