Main Entry: cir·cu·la·tion

Pronunciation: \ˌsər-kyə-ˈlā-shən\

Function: noun

Date: 1535

1 : orderly movement through a circuit; especially : the movement of blood through the vessels of the body induced by the pumping action of the heart
2 : flow
3 a : passage or transmission from person to person or place to place; especially : the interchange of currency <coins in circulation> b : the extent of dissemination: as (1) : the average number of copies of a publication sold over a given period (2) : the total number of items borrowed from a library