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circulation in Wiktionary, the free dictionary.
Circulation may refer to:
Science and technology
Atmospheric circulation , the large-scale movement of air
Circulation (physics) , the path integral of the fluid velocity around a closed curve in a fluid flow field
Circulatory system , a biological organ system whose primary function is to move substances to and from cells
Circulation problem , a generalization of network flow problems
Circulation (architecture) , the flow of people through a building
Circulation (currency) , all currency held by consumers and businesses, but not by financial institutions and governments
Exhaust gas recirculation , a nitrogen oxide reduction technique used in most gasoline and diesel engines
Library circulation , the activities around the lending of library books and other material to users of a lending library
Ocean circulation , the large-scale movement of water
Rhetorical circulation , the ways that texts and discourses move through time and space
Other uses
Topics referred to by the same term