| | - internal-combustion engine
- any of a group of devices in which the reactants of combustion (oxidizer and fuel) and the products of combustion serve as the working fluids of the engine. Such an engine gains its energy from heat released during the combustion ...
- internal-combustion engine
- any engine in which a fuel-air mixture is burned in the engine proper so that the hot gaseous products of combustion act directly on the surface of its moving parts, such as that of a piston or turbine rotor blade. ...
- international agreement
- instrument by which states and other subjects of international law, such as certain international organizations, regulate matters of concern to them. The agreements assume a variety of form and style, but they are all governed by the law of treaties, ...
- International Association of Athletics Federations
- track-and-field organization of national associations of more than 160 countries. It was founded as the International Amateur Athletic Association at Stockholm in 1912. In 1936 the IAAF took over regulation of women's international track-and-field competition from the Federation Sportive Feminine ...
- International Association of Universities
- nongovernmental educational organization founded in 1950 to promote cooperation at the international level among the universities of all countries as well as among other bodies concerned with higher education and research. Membership consists of individual universities and institutions of university ...
- International Atomic Energy Agency
- autonomous intergovernmental organization dedicated to increasing the contribution of atomic energy to the world's peace and well-being and ensuring that agency assistance is not used for military purposes. The IAEA and its director general, Mohamed ElBaradei, won the Nobel Prize ...
- International Ballet
- British dance company. Founded in 1941 by Mona Inglesby to bring classical ballet to new urban and provincial audiences, it performed in cinemas and arenas, as well as at more conventional sites. The repertory included revivals of full-length ballets, especially ...
- International Ballet Competitions
- one of the world's most prestigious dance competitions, open to both male and female dancers of all countries, and much like the Olympic Games in purpose. The first International Ballet Competitions were held in Varna, Bulg., in July 1964. The ...
- International Bank for Economic Cooperation
- international bank instituted by an agreement signed by Bulgaria, Hungary, East Germany, Mongolia, Poland, Romania, Czechoslovakia, and the Soviet Union in October 1963 to facilitate economic cooperation among the member countries and to promote their development. It began operations in ...
- International Boundary Waters Treaty
- (1909), treaty between the United States and Great Britain establishing an International Joint Commission of Americans and Canadians to oversee any issue related to waters on the boundary between the United States and Canada. The treaty was signed on Jan. ...
- International Brigades
- groups of foreign volunteers who fought on the Republican side against the Nationalist forces during the Spanish Civil War (1936-39). So called because their members (initially) came from some 50 countries, the International Brigades were recruited, organized, and directed by ...
- International Bureau of Weights and Measures
- international organization founded to bring about the unification of measurement systems, to establish and preserve fundamental international standards and prototypes, to verify national standards, and to determine fundamental physical constants. The bureau was established by a convention signed in Paris ...
- International Business Machines Corporation
- leading American computer manufacturer, with a major share of the market both in the United States and abroad. Its headquarters are in Armonk, N.Y.
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