Columbia Encyclopedia

Search results

500 results found

poison

(Encyclopedia)poison, any agent that may produce chemically an injurious or deadly effect when introduced into the body in sufficient quantity. Some poisons can be deadly in minute quantities, others only if relati...

Bakı

(Encyclopedia)Bakı bəko͞oˈ [key], city (2021 est. pop. 2,371,000), capital of Azerbaijan, on the Caspia...

Langmuir, Irving

(Encyclopedia)Langmuir, Irving lăngˈmyo͞or [key], 1881–1957, American chemist, b. Brooklyn, N.Y. Associated (1909–50) with the research laboratory of the General Electric Company, he introduced atomic-hydrog...

Lockyer, Sir Joseph Norman

(Encyclopedia)Lockyer, Sir Joseph Norman lŏkˈyər [key], 1836–1920, English astronomer, educated on the Continent. One of the first to make a spectroscopic examination of the sun and stars, he devised (1868), i...

incinerator

(Encyclopedia)incinerator, furnace for burning refuse. The older and simpler kind of incinerator was a brick-lined cell with a metal grate over a lower ash pit, with one opening in the top or side for loading and a...

Derbent

(Encyclopedia)Derbent dyĭrbyĕntˈ [key], city, SE European Russia, in Dagestan, on the Caspian Sea. It st...

Shreveport

(Encyclopedia)Shreveport shrēvˈpôrt [key], city (1990 pop. 198,525), seat of Caddo parish, NW La., on the Red River near the Tex. and Ark. lines; inc. 1839. The third largest city in the state, it is a regional ...

Potteries, the

(Encyclopedia)Potteries, the, area, c.9 mi (15 km) long and 3 mi (4.8 km) wide, Staffordshire, W central England, extending northwest-southeast in the upper Trent valley. The area includes Stoke-on-Trent and part o...

Vlorë

(Encyclopedia)Vlorë vəlōˈnə [key], city (1989 pop. 71,662), capital of Vlorë dist., SW Albania, on Vlorë Bay of the Adriatic Sea. Vlorë is a major seaport and a commercial center. Its industries produce oli...

sodium hydroxide

(Encyclopedia)sodium hydroxide, chemical compound, NaOH, a white crystalline substance that readily absorbs carbon dioxide and moisture from the air. It is very soluble in water, alcohol, and glycerin. It is a caus...