n.
Pronunciation: ˌ s ə r-ky ə - ' l ā -sh ə n
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