(Encyclopedia) tick, small, parasitic arachnid of the order Ixodida, closely related to the mites. Ticks, which are larger than the often microscopic mites, are all parasitic in at least one…
(Encyclopedia) San DiegoSan Diegosăn dēāˈgō [key], city (1990 pop. 1,110,549), seat of San Diego co., S Calif., on San Diego Bay; inc. 1850. San Diego includes the unincorporated communities of La…
(Encyclopedia) Gray, Asa, 1810–88, one of America's leading botanists and taxonomists, b. Oneida co., N.Y. As professor of natural history at Harvard from 1842, he was the teacher of many eminent…
(Encyclopedia) Ascension Ascension əsĕnˈchən [key], island, 34 sq mi (88 sq km), in the S Atlantic, NW of Saint Helena and belonging to the British St. Helena overseas…
(Encyclopedia) Midwest or Middle West, region of the United States centered on the western Great Lakes and the upper-middle Mississippi valley. It is a somewhat imprecise term that has been applied…
(Encyclopedia) AreopagusAreopagusărēŏpˈəgəs [key] [Gr.,=hill of Ares], rocky hill, 370 ft (113 m) high, NW of the Acropolis of Athens, famous as the sacred meeting place of the prime council of…
(Encyclopedia) Peace, river, 945 mi (1,521 km) long, formed by the junction of the Finlay and Parsnip rivers at Williston Lake, N central British Columbia, Canada. It flows east through the Rocky Mts…
(Encyclopedia) tetracyclinetetracyclinetĕˌtrəsīˈklēn [key], any of a group of antibiotics produced by bacteria of the genus Streptomyces. Effective against a wide range of Gram positive and Gram…
(Encyclopedia) BannockBannockbănˈək [key], Native North Americans who formerly ranged over wide territory of the N Great Plains and into the foothills of the Rocky Mts. They were concentrated in S…
