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siderite

(Encyclopedia)siderite kălˈĭbīt [key], a mineral, varying in color from brown, green, or gray to black and occurring in nature in massive and crystalline form. A carbonate of iron, FeCO3, it serves as an iron o...

Sargassum

(Encyclopedia)Sargassum särgăsˈəm [key], genus of brown algae that has given its name to the Sargasso Sea, where it is found in great abundance. See Phaeophyta; seaweed. ...

Ignatius of Constantinople, Saint

(Encyclopedia)Ignatius of Constantinople, Saint, c.800–877, Greek churchman, patriarch of Constantinople. A son of Byzantine Emperor Michael I, he was castrated and shut up in a monastery (813) by the man who dep...

Adrian IV, pope

(Encyclopedia)Adrian IV, d. 1159, pope (1154–59), an Englishman (the only English pope), b. Nicholas Breakspear at Langley, near St. Albans. He was successor of Anastasius IV. At an early age he went to France. T...

Stralsund

(Encyclopedia)Stralsund shträlˈzo͝ontˌ [key], city (1994 pop. 69,230), Mecklenburg–West Pomerania, NE Germany, on the Strelasund (an inlet of the Baltic Sea), opposite Rügen Island. It is an industrial cente...

Hawley, Joseph

(Encyclopedia)Hawley, Joseph, 1723–88, political leader in the American Revolution, b. Northampton, Mass. He was a leader of the opposition to the revivalist preaching of Jonathan Edwards and helped bring about E...

fulminate

(Encyclopedia)fulminate fŭlˈmĭnāt [key], any salt of fulminic acid, HONC, a highly unstable compound known only in solution. The term is most commonly applied to the explosive mercury (II) fulminate, also calle...

Jewett, Charles Coffin

(Encyclopedia)Jewett, Charles Coffin jo͞oˈĭt [key], 1816–68, American librarian, b. Lebanon, Maine. Jewett prepared his first catalog of books as librarian of Andover Theological Seminary. He was appointed lib...

Atlanta University Center

(Encyclopedia)Atlanta University Center, at Atlanta, Ga.; coeducational. The largest consortium of historically African-American educational institutions in the country, it was organized in 1929 when three schools�...

New Ulm

(Encyclopedia)New Ulm ŭlm [key], city (1990 pop. 13,132), seat of Brown co., S Minn., at the confluence of the Minnesota and Cottonwood rivers; inc. as a city 1876. It is a processing and trade center for an agric...