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bolometer

(Encyclopedia)bolometer bōlŏmˈətər, bə– [key], instrument for detecting and measuring radiation, e.g., visible light, infrared radiation, and ultraviolet radiation, in amounts as small as one millionth of a...

Borgia

(Encyclopedia)Borgia bôrˈhä [key], Spanish-Italian noble family, originally from Aragón. When Alfonso de Borja, cardinal-archbishop of Valencia, was pope as Calixtus III (1455–58), several relatives followed ...

Saxe-Weimar

(Encyclopedia)Saxe-Weimar săks-vīˈmär [key], Ger. Sachsen-Weimar, former duchy, Thuringia, central Germany. The area passed in the division of 1485 to the Ernestine branch of the Wettin dynasty and remained wit...

chimpanzee

(Encyclopedia)chimpanzee, an ape, genus Pan, of the equatorial forests of central and W Africa. Smaller populations are also found in the savannas of the same regions. The common chimpanzee, Pan troglodytes, lives ...

Ahmadiyya

(Encyclopedia)Ahmadiyya äh mə dēˈ yə [key], a contemporary messianic movement founded (1899) by Mirza Ghulam Ahmad (1839–1908), b. Qadiyan, the Punjab. His Barahin-i Ahmadiyya, which he began to publish in 1...

Nootka

(Encyclopedia)Nootka no͝otˈkə [key], Native North Americans whose language belongs to the Wakashan branch of the Algonquian-Wakashan linguistic stock (see Native American languages). The Nootka proper are a smal...

Medici, Giuliano de'

(Encyclopedia)Medici, Giuliano de' dā mĕˈdĭchē, Ital. māˈdēchē [key], 1479–1516, duke of Nemours (1515–16); younger son of Lorenzo de' Medici (Lorenzo il Magnifico) and brother of Pope Leo X. He enter...

mistletoe

(Encyclopedia)mistletoe, common name for the Loranthaceae, a family of chiefly tropical hemiparasitic herbs and shrubs with leathery evergreen leaves and waxy white berries. They have green leaves, but they manufac...

Tobacco Nation

(Encyclopedia)Tobacco Nation or Tionontati, Native North Americans of the Iroquoian branch of the Hokan-Siouan linguistic stock (see Native American languages). In 1616, when visited by the French, they were living...

rheology

(Encyclopedia)rheology rēŏlˈəjē [key], branch of physics dealing with the deformation and flow of matter. It is particularly concerned with the properties of matter that determine its behavior when a mechanica...