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chemical industry

(Encyclopedia)chemical industry, the business of using chemical reactions to turn raw materials, such as coal, oil, and salt, into a variety of products. During the 19th and 20th cent. technological advances in the...

in vitro fertilization

(Encyclopedia)in vitro fertilization vēˈtrō, vĭˈtrō [key] (IVF), technique for conception of a human embryo outside the mother's body. Several ova, or eggs, are removed from the mother's body and placed in sp...

Aswan

(Encyclopedia)Aswan or Assuan both: äswänˈ, ăswănˈ [key], city (1986 pop. 190,579), capital of Aswan governorate, S Egypt, on the Nile River at the First Cataract. It is one of the driest cities in the world....

bridge, card game

(Encyclopedia)bridge, card game derived from whist, played with 52 cards by four players in two partnerships. Bridge probably originated in the Middle East in the 19th cent. Auction bridge, one form of the game, ...

tomb

(Encyclopedia)tomb, vault or chamber constructed either partly or entirely above ground as a place of interment. Although it is often used as a synonym for grave, the word is derived from the Greek tymbos [burial g...

moon

(Encyclopedia)CE5 The moon: Near side CE5 The moon: Far side moon, natural satellite of a planet (see satellite, natural) or dwarf planet, in particular, the single natural satellite of the earth. It is no...

chlorofluorocarbons

(Encyclopedia)chlorofluorocarbons klōrˌəflo͝orˈəkärˌbənz, klôrˌ– [key] (CFCs), organic compounds that contain carbon, chlorine, and fluorine atoms. CFCs are highly effective refrigerants that were deve...

journalism

(Encyclopedia)journalism, the collection and periodic publication or transmission of news through media such as newspaper, periodical, television, and radio. By broadcasting events such as the Watergate hearin...

rocket, in aeronautics

(Encyclopedia)CE5 Relative positions of the components of the Saturn V rocket, the U.S. space vehicle used in the moon missions rocket, any vehicle propelled by ejection of the gases produced by combustion of s...

cold war

(Encyclopedia)cold war, term used to describe the shifting struggle for power and prestige between the Western powers and the Communist bloc from the end of World War II until 1989. Of worldwide proportions, the co...