To travel round; make a circuit of.To cause to pass from place to place or from person to person; spread; disseminate: as, to circulate, a report; to circulate bills of credit.To move in a circle or circuit; move or pass through a circuit back to the starting-point: as, the blood circulates in the body; the bottle circulated about the table.To be diffused or distributed; pass from place to place, from person to person, or from hand to hand: as, air circulates in a building; money circulates in the country; the report circulated throughout the city.n. A circulating decimal.