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peptide

(Encyclopedia)peptide, organic compound composed of amino acids linked together chemically by peptide bonds. The peptide bond always involves a single covalent link between the α-carboxyl (oxygen-bearing carbon) o...

oriole

(Encyclopedia)oriole, common name applied to various perching birds of the Old (family Oriolidae) and New (family Icteridae) Worlds. The European orioles are allied to the crows, while the American orioles, of the ...

Las Casas, Bartolomé de

(Encyclopedia)Las Casas, Bartolomé de bärtōlōmāˈ dā läs käˈsäs [key], 1474–1566, Spanish missionary and historian, called the apostle of the Indies. He went to Hispaniola with his father in 1502, and e...

Arras, Treaty of

(Encyclopedia)Arras, Treaty of. 1 Treaty of 1435, between King Charles VII of France and Duke Philip the Good of Burgundy. Through it, France and Burgundy became reconciled. Philip deserted his English allies and r...

Leo I, Saint, pope

(Encyclopedia)Leo I, Saint (Saint Leo the Great), c.400–461, pope (440–61), an Italian; successor of St. Sixtus III. A Doctor of the Church, he was one of the greatest pontiffs of the early years of the church....

Leo X, pope

(Encyclopedia)Leo X, 1475–1521, pope (1513–21), a Florentine named Giovanni de' Medici; successor of Julius II. He was the son of Lorenzo de' Medici, was made a cardinal in his boyhood, and was head of his fami...

Pius IV

(Encyclopedia)Pius IV, 1499–1565, pope (1559–65), a Milanese named Giovanni Angelo de' Medici; successor of Paul IV. He was probably not related to the great Medici family. His career in Rome began in 1527, and...

potlatch

(Encyclopedia)potlatch pŏtˈlăchˌ [key], ceremonial feast of the natives of the NW coast of North America, entailing the public distribution of property. The host and his relatives lavishly distributed gifts to ...

bushbuck

(Encyclopedia)bushbuck, either of two small, delicate, spiral-horned antelopes of sub-Saharan Africa, the imbabala (Tragelaphus sylvaticus) and the kéwel (T. scriptus), formerly classified as a single species. Bus...

William of Wykeham

(Encyclopedia)William of Wykeham or William of Wickham both: wĭˈkəm [key], 1324–1404, English prelate and lord chancellor. He is thought to have been the son of a serf. Entering the service of the royal court ...