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tartar, dental

(Encyclopedia)tartar, dental, precipitate of saliva that accumulates around teeth at the gum line. Composed primarily of calcium salts, tartar forms as a hard brownish substance that irritates gums and causes them ...

Spring Valley

(Encyclopedia)Spring Valley. 1 Uninc. community (1990 pop. 55,331), within the confines of San Diego, San Diego co., SW Calif., on Sweetwater Lake. It is a rapidly growing residential community, with some light ind...

Steig, William

(Encyclopedia)Steig, William, 1907–2003, American cartoonist and children's book writer, b. Brooklyn, N.Y. He began drawing cartoons for the The New Yorker in the 1930s, and ultimately produced over 1,600 spontan...

Camp, Walter Chauncey

(Encyclopedia)Camp, Walter Chauncey, 1859–1925, American athlete, football coach, administrator, b. New Britain, Conn. In his three years as captain at Yale Univ. in the 1880s, Camp shaped the rules that transfor...

Pennsylvania

(Encyclopedia)CE5 Pennsylvania pĕnsəlvāˈnyə [key], one of the Middle Atlantic states of the United States. It is bordered by New Jersey, across the Delaware River (E), Delaware (SE), Maryland (S), West Virg...

Hill, James Jerome

(Encyclopedia)Hill, James Jerome, 1838–1916, American railroad builder, b. Ontario, Canada. He went to St. Paul, Minn., in 1856. He became a partner of Norman Kittson in a steamboat line and, with Kittson, Donald...

Little Tennessee

(Encyclopedia)Little Tennessee, river, c.135 mi (220 km) long, rising in the Blue Ridge, NE Ga., and flowing generally NW across SW N.C. and through E Tenn. to the Tennessee River opposite Lenoir City. On the river...

Jeonju

(Encyclopedia)Jeonju or Chonju jônˈjo͞oˈ [key], city (1995 pop. 563,406), capital of North Jeolla (Cholla) prov., SW South Korea. It is a transportation, industrial, and agricultural center in the heart of the ...

Athabasca

(Encyclopedia)Athabasca ăthəbăsˈkə [key], river, 765 mi (1,231 km) long, rising in the Columbia snowfield of the Canadian Rockies near the Alta.–British Columbia line and flowing N through Jasper National Pa...

Maan

(Encyclopedia)Maan məänˈ [key], town (1996 est. pop. 18,000), S Jordan. It is the terminus of the country's main rail line (which extends to Damascus, Syria) and carries on trade in agricultural produce. Importa...