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Colorado Springs

(Encyclopedia)Colorado Springs, city (2020 pop. 478,961), seat of El Paso co., central Colo., on Monument and Fountain creeks, at the foot of Pikes Peak; inc. ...

Scowcroft, Brent

(Encyclopedia)Scowcroft, Brent, 1925–2020, U.S. air force general and government official, b. Ogden, Utah, B.S. United States Military Academy, 1947, Ph.D. Columbia, 1967. From 1947 to 1975, he served in the U.S....

peroxide

(Encyclopedia)peroxide pərŏkˈsīd [key], chemical compound containing two oxygen atoms, each of which is bonded to the other and to a radical or some element other than oxygen; e.g., in hydrogen peroxide, H2O2, ...

Harvard, John

(Encyclopedia)Harvard, John, 1607–38, English minister in America and first major benefactor of Harvard College, b. Southwark, England, M.A. Emmanuel College, Cambridge, 1635. He immigrated in 1637 to Charlestown...

Peabody, Endicott

(Encyclopedia)Peabody, Endicott pēˈbädē, –bədē [key], 1857–1944, American educator, b. Salem, Mass., grad. Cheltenham College, 1876, LL.B. Cambridge, 1880. Ordained (1885) in the Episcopal Church, Peabody...

Persian Gulf Wars

(Encyclopedia)Persian Gulf Wars, two conflicts involving Iraq and U.S.-led coalitions in the late 20th and early 21st cent. The First Persian Gulf War, also known as the Gulf War, Jan.–Feb., 1991, was an armed co...

matter

(Encyclopedia)matter, anything that has mass and occupies space. Matter is sometimes called koinomatter (Gr. koinos=common) to distinguish it from antimatter, or matter composed of antiparticles. The atomic th...

diving, deep-sea

(Encyclopedia)diving, deep-sea, act of descending into deep water, generally with some form of breathing apparatus, and remaining there for an extended period. It is used in fishing for sponges, coral, and pearls; ...

Concord, river, United States

(Encyclopedia)Concord, river, c.15 mi (24 km) long, NE Mass., a short tributary of the Merrimack, which it joins at Lowell. On Apr. 19, 1775, colonial militia fired some of the first shots of the American Revolutio...

Sanctus

(Encyclopedia)Sanctus [Lat.,=holy], hymn of the Roman Catholic Mass, beginning, “Holy, holy, holy,” from Isa. 6.3; Mat. 21.9. It is the solemn choral ending of the preface. In the old liturgy the second part of...