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Pizarro, Gonzalo

(Encyclopedia)Pizarro, Gonzalo pēthärˈrō [key], c.1506–1548, Spanish conquistador, brother of Francisco Pizarro. A lieutenant of his brother in the conquest of Peru, Gonzalo aided in the defense of Cuzco (15...

Catherine de' Medici

(Encyclopedia)Catherine de' Medici dĕ mĕdˈĭchē, Ital. dā mĕˈdēchē [key], 1519–89, queen of France, daughter of Lorenzo de' Medici, duke of Urbino. She was married (1533) to the duc d'Orléans, later Kin...

Peirce, Charles Sanders

(Encyclopedia)Peirce, Charles Sanders pûrs [key], 1839–1914, American philosopher and polymath, b. Cambridge, Mass., grad. Harvard, 1859; son of Benjamin Peirce. Except for occasional lectures he renounced the r...

Cistercians

(Encyclopedia)Cistercians sĭstrˈshənz [key], monks of a Roman Catholic religious order founded (1098) by St. Robert, abbot of Molesme, in Cîteaux [Cistercium], Côte-d'Or dept., France. They reacted against Clu...

Escherichia coli

(Encyclopedia)Escherichia coli ĕshˌərĭkˈēə kōˈlī [key], common bacterium that normally inhabits the intestinal tracts of humans and animals, but can cause infection in other parts of the body, especially ...

Iturbide, Agustín de

(Encyclopedia)Iturbide, Agustín de ägo͞ostēnˈ dā ēto͞orbēˈᵺā [key], 1783–1824, Mexican revolutionist, emperor of Mexico (1822–23). An officer in the royalist army, he was sympathetic to independenc...

Hunan

(Encyclopedia)Hunan ho͞oˈnänˈ [key] [south of the lake], province, c.80,000 sq mi (207,254 sq km), S ce...

hypertension

(Encyclopedia)hypertension or high blood pressure, elevated blood pressure resulting from an increase in the amount of blood pumped by the heart or from increased resistance to the flow of blood through the small a...

embryo screening

(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 tested for genetic a...

nonlinear dynamics

(Encyclopedia)nonlinear dynamics, study of systems governed by equations in which a small change in one variable can induce a large systematic change; the discipline is more popularly known as chaos (see chaos theo...