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eutrophication

(Encyclopedia)eutrophication yo͞otrōˌfĭkāˈshən [key], aging of a lake by biological enrichment of its water. In a young lake the water is cold and clear, supporting little life. With time, streams draining i...

enamel

(Encyclopedia)enamel, a siliceous substance fusible upon metal. It may be so compounded as to be transparent or opaque and with or without color, but it is usually employed to add decorative color. It was used to d...

endometriosis

(Encyclopedia)endometriosis ĕnˌdəmēˌtrē-ōˈsĭs [key], a condition in which small pieces of the endometrium (the lining of the uterus) migrate to other places in the pelvic area. The endometrial fragments ma...

Smith, W. Eugene

(Encyclopedia)Smith, W. Eugene (William Eugene Smith), 1918–78, American photojournalist, b. Wichita, Kan. Smith is considered one of the principal masters of modern photojournalism. The distorted newspaper cover...

Basket Makers

(Encyclopedia)Basket Makers, name given to the members of an early Native North American culture in the Southwest, predecessors of the Pueblo. Because of the cultural continuity from the Basket Makers to the Pueblo...

Plymouth Brethren

(Encyclopedia)Plymouth Brethren, group of Christian believers originating in the early 19th cent. in Ireland and spreading from there to the Continent (especially Switzerland), the British dominions, and the United...

Rosecrans, William Starke

(Encyclopedia)Rosecrans, William Starke rōzˈkrănz [key], 1819–98, Union general in the American Civil War, b. Kingston, Ohio. He served in the army from 1842 to 1854 and in Apr., 1861, rejoined as a volunteer....

trumpet

(Encyclopedia)trumpet, brass wind musical instrument of part cylindrical, part conical bore, in the shape of a flattened loop and having three piston valves to regulate the pitch. Its origin is ancient; records of ...

Noriega, Manuel Antonio

(Encyclopedia)Noriega, Manuel Antonio mänwĕlˈ äntōˈnyō nôryāˈgə [key], 1934–2017, Panamanian general. Commander of the Panamanian Defense Forces from 1983, when he promoted himself to full general, Nor...

Walker, William

(Encyclopedia)Walker, William, 1824–60, American filibuster in Nicaragua, b. Nashville, Tenn. Walker, a qualified doctor, a lawyer, and a journalist by the time he was 24, sought a more adventurous career. After ...