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anthracene

(Encyclopedia)CE5 anthracene ănˈthrəsēn [key], C14H10, solid organic compound derived from coal tar. It melts at 218℃ and boils at 354℃. When pure it is colorless and has a violet fluorescence; it darken...

Gibbons v. Ogden

(Encyclopedia)Gibbons v. Ogden, case decided in 1824 by the U.S. Supreme Court. Aaron Ogden, the plaintiff, had purchased an interest in the monopoly to operate steamboats that New York state had granted to Robert ...

amphitheater

(Encyclopedia)amphitheater ămˈfəthēˌətər, ămˈpə– [key], open structure used for the exhibition of gladiatorial contests, struggles of wild beasts, sham sea battles, and similar spectacles. There is no G...

Mills, C. Wright

(Encyclopedia)Mills, C. Wright (Charles Wright Mills), 1916–62, American sociologist, b. Waco, Tex. He studied at the Univ. of Texas (A.B., M.A., 1939) and the Univ. of Wisconsin (Ph.D., 1942) and spent his acade...

Morelia

(Encyclopedia)Morelia mōrāˈlyä [key], city (1990 pop. 489,756), capital of Michoacán state, W Mexico. It is the commercial and processing center of an irrigated agricultural and cattle-raising area. Founded as...

nose

(Encyclopedia)nose, olfactory and respiratory organ, located between the eyes. The external nose, composed of bone and cartilage, is the most prominent feature of the face in humans. The internal nose is a hollow s...

nave

(Encyclopedia)nave nāv [key], in general, all that part of a church that extends from the atrium to the altar and is intended exclusively for the laity. In a strictly architectural sense, however, the term indicat...

opal

(Encyclopedia)opal ōˈpəl [key], a mineral consisting of poorly crystalline to amorphous silica, SiO2·nH2O; the water content is quite variable but usually ranges from 3% to 10%. Common opal is usually colorless...

Luria, Salvador Edward

(Encyclopedia)Luria, Salvador Edward, 1912–1991, American physician, b. Turin, Italy, M.D., Univ. of Turin, 1935. He conducted research and taught at the Institute of Radium in Paris (1938–40), Columbia (1940�...

mandala

(Encyclopedia)mandala mŭnˈdələ [key], [Skt.,=circular, round] a concentric diagram having spiritual and ritual significance in Hindu and Buddhist Tantrism. The mandala may have derived from the circular stupa a...