This continual circulation of human things. --Swift.
2. The act of passing from place to place or person to
person; free diffusion; transmission.
The true doctrines of astronomy appear to have had
some popular circulation. --Whewell.
3. Currency; circulating coin; notes, bills, etc., current
for coin.
4. The extent to which anything circulates or is circulated;
the measure of diffusion; as, the circulation of a
newspaper.
5. (Physiol.) 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.