circulation
/ˌsɚkjəˈleɪʃən/
noun
plural -tions
[noncount] the movement of blood through the body that is caused by the pumping action of the heart
movement of air, water, etc., through the different parts of something
[noncount] :the act of passing something (such as money, information, etc.) from person to person or place to place
[noncount] :the state of being actively involved in social activities (such as parties or dates)
[count] :the average number of copies of a newspaper, magazine, etc., that are sold over a particular period