circulation

noun

1. 1

   The act of moving in a circle, or in a course which brings the moving body to the place where its motion began.

2. 2

   The act of passing from place to place or person to person; free diffusion; transmission.

3. 3

   Currency; circulating coins; notes, bills, etc., current for coin.

   “The new bills will come into circulation next Friday.”

4. 4

   The extent to which anything circulates or is circulated; the measurement of diffusion

5. 5

   The movement of the blood in the circulatory system, by which it is brought into close relations with almost every living elementary constituent.

6. 6

   The movement of the sap in the vessels and tissues of plants.