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Briggs, Henry

(Encyclopedia)Briggs, Henry, 1561–1630, English mathematician. He was the first professor of geometry at Gresham College, London (1596–1619), and Savilian professor of astronomy at Oxford (from 1619). After pub...

balata

(Encyclopedia)balata bălˈətə [key], nonelastic natural rubber obtained as a latex from the South American tree Manikara bidentata and from related trees. Its properties are similar to those of gutta-percha, and...

Barataria Bay

(Encyclopedia)Barataria Bay bărətârˈēə [key], SE La., separated from the Gulf of Mexico by Grand and Grand Terre islands. It is linked to the Intracoastal Waterway by a navigable channel. The bay is the cente...

Osborn, Henry Fairfield

(Encyclopedia)Osborn, Henry Fairfield, 1857–1935, American paleontologist and geologist, b. Fairfield, Conn. He was professor of comparative anatomy (1883–90) at Princeton, and professor of biology (1891–96) ...

petrochemical

(Encyclopedia)petrochemical, any one of a large group of chemicals derived from a component of petroleum or natural gas. The cracking processes for manufacturing gasoline produce vast quantities of gaseous hydrocar...

erosion

(Encyclopedia)erosion ĭrōˈzhən [key], general term for the processes by which the surface of the earth is constantly being worn away. The principal agents are gravity, running water, near-shore waves, ice (most...

intelligent design

(Encyclopedia)intelligent design, theory that some complex biological structures and other aspects of nature show evidence of having been designed by an intelligence. Such biological structures are said to have int...

hydrocarbon

(Encyclopedia)hydrocarbon hīˌdrōkärˈbən [key], any organic compound composed solely of the elements hydrogen and carbon. The hydrocarbons differ both in the total number of carbon and hydrogen atoms in their ...

Drohobych

(Encyclopedia)Drohobych drôˌkôbĭchˈ [key], Pol. Drohobycz, Rus. Drogobych, city (1989 pop. 78,000), Lviv region, W Ukraine, in the N Carpathian foothills. The major petroleum-refining center of the Boryslav oi...

Como, Lake

(Encyclopedia)Como, Lake kōˈmō [key], Ital. Lago di Como or Lario, c.56 sq mi (145 sq km), 30 mi (48 km) long and from 1⁄2 to 21⁄2 mi (0.8–4 km) wide, in Lombardy, N Italy. Lake Como is a natural widening ...