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electrodynamics

(Encyclopedia)electrodynamics, study of phenomena associated with charged bodies in motion and varying electric and magnetic fields (see charge; electricity); since a moving charge produces a magnetic field, electr...

Dunham, Katherine

(Encyclopedia)Dunham, Katherine dŭnˈəm [key], 1909?–2006, American dancer, choreographer, and anthropologist, b. Chicago. She studied anthropology at the Univ. of Chicago, where she received a B.A. and Ph.D. a...

combinatorics

(Encyclopedia)combinatorics kŏmˌbĭnətôrˈēəl [key], sometimes called the science of counting, the branch of mathematics concerned with the selection, arrangement, and operation of elements within sets. Combi...

chameleon

(Encyclopedia)chameleon kəmēˈlēən, –mēlˈyən [key], small- to medium-sized lizard of the family Chamaeleonidae. More than 150 species are found in sub-Saharan Africa, with a few in S Europe and S Asia. The...

executive

(Encyclopedia)executive, one who carries out the will or plan of another person or of a group. In government, the term refers not only to the chief administrative officer but to all others who execute the laws and ...

Saint John, city, Canada

(Encyclopedia)Saint John, city (1991 pop. 74,969), S N.B., Canada, at the mouth of the St. John River on the Bay of Fundy. A year-round port, it has an excellent harbor, large dry docks, and terminal facilities. Th...

Reading, Rufus Daniel Isaacs, 1st marquess of

(Encyclopedia)Reading, Rufus Daniel Isaacs, 1st marquess of rĕdˈĭng [key], 1860–1935, British statesman. Called to the bar in 1887, he achieved great success in his profession. He entered Parliament as a Liber...

obstetrics

(Encyclopedia)obstetrics ŏbstĕˈtrĭks [key], branch of medicine concerned with the treatment of women during pregnancy, labor, childbirth (see birth), and the time after childbirth. Obstetricians work to ensure ...

Paiute

(Encyclopedia)Paiute pīo͞otˈ [key], two distinct groups of Native North Americans speaking languages belonging to the Shoshonean group of the Uto-Aztecan branch of the Aztec-Tanoan linguistic stock (see Native A...

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 ...