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aromatic compound

(Encyclopedia)aromatic compound, any of a large class of compounds that includes benzene and compounds that resemble benzene in certain of their chemical properties. Originally applied to a small class of pleasant-...

sword

(Encyclopedia)sword, weapon of offense and defense in personal combat, consisting of a blade with a sharp point and one or two cutting edges, set in a hilt with a handle protected by a metal case or cross guard. Th...

Washington, Denzel

(Encyclopedia) Washington, Denzel (Denzel Hayes Washington Jr.), 1954- , African-American actor, b. Mount Vernon, N.Y., Fordham Univ. (B.A., 1977). Washington’s fa...

blasphemy

(Encyclopedia)blasphemy, in religion, words or actions that display irreverence toward or contempt for God or that which is held sacred. Blasphemy is regarded as an offense against the community to varying degrees,...

Faust

(Encyclopedia)Faust yōˈhän [key], fl. 16th cent., learned German doctor who traveled widely, performed magical feats, and died under mysterious circumstances. According to legend he had sold his soul to the devi...

frontier

(Encyclopedia)frontier, in U.S. history, the border area of settlement of Europeans and their descendants; it was vital in the conquest of the land between the Atlantic and the Pacific. The importance of the westwa...

aurora borealis

(Encyclopedia)aurora borealis ôstrāˈlĭs [key], luminous display of various forms and colors seen in the night sky. The aurora borealis of the Northern Hemisphere is often called the northern lights, and the aur...

Bulgarian language

(Encyclopedia)Bulgarian language, member of the South Slavic group of the Slavonic subfamily of the Indo-European family of languages (see Slavic languages). Bulgarian is the native tongue of some 9 million people,...

Bunyan, John

(Encyclopedia)Bunyan, John bŭnˈyən [key], 1628–88, English author, b. Elstow, Bedfordshire. After a brief period at the village free school, Bunyan learned the tinker's trade, which he followed intermittently ...

aging

(Encyclopedia)aging, in biology, cumulative changes in an organism, organ, tissue, or cell leading to a decrease in functional capacity. In humans, aging is associated with degenerative changes in the skin, bones, ...