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Proclus

(Encyclopedia)Proclus prōˈkləs [key], 410?–485, Neoplatonic philosopher, b. Constantinople. He studied at Alexandria and at Athens, where he was a pupil of the Platonist Syrianus, whom he succeeded as a teache...

pitchblende

(Encyclopedia)pitchblende pĭchˈblĕndˌ [key], dark, lustrous, heavy mineral, a source of radium and uranium. Largely natural uranium oxides, triuranium octaoxide (U3O8) and uranium dioxide (UO2), it usually cont...

Peele, George

(Encyclopedia)Peele, George, 1558?–1597?, English playwright, educated at Oxford. He experimented in a variety of forms, including the pageant, history, pastoral, comedy, and melodrama, but his best-known work is...

Italian architecture

(Encyclopedia)Italian architecture, the several styles employed in Italy after the Roman period. Nineteenth-century Italian architecture, such as Giuseppe Sacconi's Victor Emmanuel monument, shows a decline in qu...

mineral, dietary

(Encyclopedia)mineral, dietary, any of a group of inorganic elements that are essential to humans and animals for normal body function. In nutrition, minerals are those elements for which the body's requirement is ...

supernova

(Encyclopedia)supernova, a massive star in the latter stages of stellar evolution that suddenly contracts and then explodes, increasing its energy output as much as a billionfold. Supernovas are the principal distr...

column

(Encyclopedia)column, vertical architectural support, circular or polygonal in plan. A column is generally at least four or five times as high as its diameter or width; stubbier freestanding masses of masonry are u...

Stresemann, Gustav

(Encyclopedia)Stresemann, Gustav go͝osˈtäf shtrāˈzəmän [key], 1878–1929, German statesman. A founder (1902) and director (until 1918) of the Association of Saxon Industrialists, Stresemann entered the Reic...

Alembert, Jean le Rond d'

(Encyclopedia)Alembert, Jean le Rond d' zhäN lərôNˈ däläNbĕrˈ [key], 1717–83, French mathematician and philosopher. The illegitimate son of the chevalier Destouches, he was named for the St. Jean le Rond ...

Familists

(Encyclopedia)Familists fămˈĭlĭsts [key], religious community founded in Friesland in the 16th cent. by Hendrik Niclaes. Niclaes, a merchant of Münster and originally a Roman Catholic, claimed to have been cho...