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Heron of Alexandria

(Encyclopedia)Heron of Alexandria hērˈŏn [key] or Hero, mathematician and inventor. The dates of his birth and death are unknown; conjecture places them between the 2d cent. b.c. and the 3d cent. a.d. He is beli...

Chelsea ware

(Encyclopedia)Chelsea ware, chinaware made in the mid-18th cent. at a factory in Chelsea, London. The earliest specimens extant are dated 1745 and have the potter's mark of a triangle and the word Chelsea. Nicholas...

truss

(Encyclopedia)CE5 A. King post truss B. Queen, with princess posts truss, in architecture and engineering, a supporting structure or framework composed of beams, girders, or rods commonly of steel or wood lying...

Dior, Christian

(Encyclopedia)Dior, Christian krēstyäNˈ dē-ôrˈ [key], 1905–57, French fashion designer. He established his main house of couture in Paris (1946) and by 1958 had salons in 15 countries employing more than 2,...

Irvine, William

(Encyclopedia)Irvine, William ûrˈvĭn [key], 1741–1804, American soldier, b. Ireland. He studied medicine in Ireland and after 1764 practiced in Carlisle, Pa. He was called to service as colonel of a Pennsylvan...

Big Bend National Park

(Encyclopedia)Big Bend National Park, 801,163 acres (324,471 hectares), W Tex.; authorized 1935, est. 1944. It is a triangle formed where the Rio Grande runs southeast then northeast in a big bend along the U.S.-Me...

aorta

(Encyclopedia)CE5 Aorta aorta āôrˈtə [key], primary artery of the circulatory system in mammals, delivering oxygenated blood to all other arteries except those of the lungs. The human aorta, c.1 in. (2.54 c...

Falluja, Al

(Encyclopedia)Falluja, Al äl fälo͞oˈjə [key], town, Anbar prov., central Iraq, on the Euphrates. A strategic city ...

paraplegia

(Encyclopedia)paraplegia pârˌəplēˈjēə [key], paralysis of the lower part of the body, commonly affecting both legs and often internal organs below the waist. When both legs and arms are affected, the conditi...

chartered companies

(Encyclopedia)chartered companies, associations for foreign trade, exploration, and colonization that came into existence with the formation of the European nation states and their overseas expansion. An associatio...