1 the dissemination of copies of periodicals (as newspapers or magazines)
2 movement through a circuit; especially the movement of blood through the heart and blood vessels
3 (library science) the count of books that are loaned by a library over a specified period
4 number of copies of a newspaper or magazine that are sold; "by increasing its circulation the newspaper hoped to increase its advertising"
5 free movement or passage through a series of vessels (as of water through pipes or sap through a plant)
6 the spread or transmission of something (as news or money) to a wider group or area
- Rhymes: -eɪʃǝn
- The act of moving in a circle, or in a course which brings the moving body to the place where its motion began.
- The act of passing from place to place or person to person; free diffusion; transmission.
- Currency; circulating coin; notes, bills, etc., current for coin.
- The extent to which anything circulates or is circulated; the measure of diffusion; as, the circulation of a newspaper.
- The movement of the blood in the blood-vascular system, by which it is brought into close relations with almost every living elementary constituent. Also the movement of the sap in the vessels and tissues of plants.
- traffic (pedestrians or vehicles on roads or on the air)
Circulation may be used in reference to:
- Circulatory system, a biological organ system whose primary function is to move substances to and from cells
- Circulation (fluid dynamics), the path integral of the fluid velocity around a closed curve
- Exhaust gas recirculation, a nitrogen oxide reduction technique
- Atmospheric circulation, the large-scale movement of air
- Circulation (journal), a scientific journal published by the American Heart Association
- Circulation (UK duo), a UK house music duo
- Circulation problem, a generalisation of network flow problems
- Library circulation, the activities around the lending of library books and other material to users of a lending library
circulation in Spanish: Circulación
circulation in French: Circulation
circulation in Italian: Circolazione
circulation in Dutch: Circulatie
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