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phylum

(Encyclopedia)phylum, in taxonomy: see classification. ...

category, in taxonomy

(Encyclopedia)category, in taxonomy: see classification. ...

clipper

(Encyclopedia)clipper, type of sailing ship, designed for speed. Long and narrow, the clipper had the greatest beam aft of the center; the bow cleaved the waves; and the ship carried, besides topgallant and royal s...

Wilson, Charles Thomson Rees

(Encyclopedia)Wilson, Charles Thomson Rees, 1869–1959, Scottish physicist, educated at Manchester and Cambridge universities. He was Jacksonian professor of natural philosophy at Cambridge from 1925 to 1934. Note...

comet

(Encyclopedia)CE5 Comet: Whatever the direction of a comet's flight, its “tail” always points away from the sun. The tail disappears when the comet is far from the sun. comet [Gr.,=longhaired], a small cele...

Sedna

(Encyclopedia)Sedna, in astronomy, the most distant known large object in the solar system. With a highly eccentric elliptical orbit that ranges from an estimated 76 AU to 937 AU, Sedna also has an extremely long o...

Hamitic languages

(Encyclopedia)Hamitic languages, subfamily of the Hamito-Semitic family of languages, a now-abandoned system of classification for languages of N Africa and SW Asia. The Egyptian, Berber, Cushitic, and (sometimes) ...

sleet

(Encyclopedia)sleet, precipitation of small, partially melted grains of ice. As raindrops fall from clouds, they pass through layers of air at different temperatures. If they pass through a layer with a temperature...

subspecies

(Encyclopedia)subspecies, also called race, a genetically distinct geographical subunit of a species. See also classification. ...

Fabricius, Johan Christian

(Encyclopedia)Fabricius, Johan Christian yōhănˈ krĭsˈtyän fäbrēˈsyo͝os [key], 1745–1808, Danish entomologist. Influenced by the methods of Linnaeus, under whom he studied, he devised a system of classif...