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flying fish

(Encyclopedia) flying fish, common name for members of the Exocoetidae, a family of carnivorous or herbivorous fish of warmer seas. Flying fishes usually swim in schools. They average 7 to 12 in. (17…

geodesy

(Encyclopedia) geodesygeodesyjēŏdˈĭsē [key] or geodetic surveying, theory and practice of determining the position of points on the earth's surface and the dimensions of areas so large that the…

Tombaugh, Clyde William

(Encyclopedia) Tombaugh, Clyde WilliamTombaugh, Clyde Williamtŏmˈbô [key], 1906–97, American astronomer, b. Streator, Ill. Although lacking formal training or a college degree, he was hired in 1929…

Cohen, Leonard Norman

(Encyclopedia) Cohen, Leonard Norman, 1934–2016, Canadian songwriter, singer, and poet, b. Montreal, B.A. McGill Univ., 1955. He initially wrote poetry, publishing his first collection, Let Us…

polymerase chain reaction

(Encyclopedia) polymerase chain reactionpolymerase chain reactionpŏlˈĭmərāsˌ [key] (PCR), laboratory process in which a particular DNA segment from a mixture of DNA chains is rapidly replicated,…

psychological test

(Encyclopedia) psychological test, any of a variety of testing procedures for measuring psychological traits and behavior, or for studying some specialized aspect of ability. Several forms of testing…

anthropology

(Encyclopedia) anthropology, classification and analysis of humans and their society, descriptively, culturally, historically, and physically. Its unique contribution to studying the bonds of human…

Uranus , in astronomy

(Encyclopedia) UranusUranusy&oobreve;rāˈnəs, y&oobreve;rˈə– [key], in astronomy, 7th planet from the sun, at a mean distance of 1.78 billion mi (2.87 billion km), with an orbit lying between…

Eakins, Thomas

(Encyclopedia) Eakins, ThomasEakins, Thomasāˈkĭnz [key], 1844–1916, American painter, photographer, and sculptor, b. Philadelphia, where he worked most of his life. Eakins is considered the foremost…