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tadpole

(Encyclopedia)tadpole, larval, aquatic stage of any of the amphibian animals. After hatching from the egg, the tadpole, sometimes called a polliwog, is gill-breathing and legless and propels itself by means of a ta...

Westinghouse, George

(Encyclopedia)Westinghouse, George, 1846–1914, American inventor and manufacturer, b. Central Bridge, N.Y. In the Civil War he served in the Union army and navy. Among his inventions in the railroad field were a ...

Galvani, Luigi

(Encyclopedia)Galvani, Luigi lo͞oēˈjē gälväˈnē [key], 1737–98, Italian physician. He was professor of anatomy from 1775 at the Univ. of Bologna and was noted as a surgeon and for research in comparative a...

toad

(Encyclopedia)toad, name applied to certain members of the amphibian order Anura, which also includes the frog. Although there is no clear-cut distinction between toads and frogs, the name toad commonly refers to t...

Gurdon, Sir John Bertrand

(Encyclopedia)Gurdon, Sir John Bertrand, 1933–, British biologist, Ph.D. Oxford, 1962. He has been a researcher at Cambridge since 1971. Gurdon was the joint recipient of the 2012 Nobel Prize in Physiology or Med...

froghopper

(Encyclopedia)froghopper or spittlebug, small, hopping insect of the order Homoptera. The adult, under 1⁄2 in. (1.2 cm) long in most species, is triangular in shape and usually gray or dull green to brown. Most f...

clone

(Encyclopedia)clone, group of organisms, all of which are descended from a single individual through asexual reproduction, as in a pure cell culture of bacteria. Except for changes in the hereditary material that c...

Henson, Jim

(Encyclopedia)Henson, Jim (James Maury Henson), 1936–90, American puppeteer, creator of the Muppets, b. Greenville, Miss., grad. Univ. of Maryland (A.B., 1960). In 1954 he got his first job as a local television ...

Mo Yan

(Encyclopedia)Mo Yan, 1955–, Chinese novelist, pen name of Guan Moye, b. Shandong prov. Mo is one of contemporary China's most prolific and popular writers. He left school in the fifth grade and did farm and fact...

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