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General Agreement on Tariffs and Trade

(Encyclopedia)General Agreement on Tariffs and Trade (GATT), former specialized agency of the United Nations. It was established in 1948 as an interim measure pending the creation of the International Trade Organiz...

imagists

(Encyclopedia)imagists, group of English and American poets writing from 1909 to about 1917, who were united by their revolt against the exuberant imagery and diffuse sentimentality of 19th-century poetry. Influenc...

echo sounder

(Encyclopedia)echo sounder, an older instrumentation system for indirectly determining ocean floor depth. Echo sounding is based on the principle that water is an excellent medium for the transmission of sound wave...

dualism

(Encyclopedia)dualism, any philosophical system that seeks to explain all phenomena in terms of two distinct and irreducible principles. It is opposed to monism and pluralism. In Plato's philosophy there is an ulti...

common-ion effect

(Encyclopedia)common-ion effect, decrease in solubility of an ionic salt, i.e., one that dissociates in solution into its ions, caused by the presence in solution of another solute that contains one of the same ion...

convection

(Encyclopedia)convection, mode of heat transfer in fluids (liquids and gases). Convection depends on the fact that, in general, fluids expand when heated and thus undergo a decrease in density (since a given volume...

elevator, in machinery

(Encyclopedia)elevator, in machinery, device for transporting people or goods from one level to another. The term is applied to the enclosed structures as well as the open platforms used to provide vertical transpo...

poison ivy

(Encyclopedia)poison ivy, poison oak, and poison sumac, woody vines and trailing or erect shrubs of the family Anacardiaceae (sumac family), native to North America. They are sometimes considered as several specie...

primary

(Encyclopedia)primary, in the United States, a preliminary election in which the candidate of a party is nominated directly by the voters. The establishment of the primary system resulted from the demand to elimina...

will, in philosophy and psychology

(Encyclopedia)will, in philosophy and psychology, term used to describe that which is alleged to stimulate the motivation of purposeful activity. It is characteristic of the will that it can be observed only in one...