01 n. The act of moving in a circle, or in a course which brings the moving body to the place where its motion began.
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1.
The act of moving in a circle, or in a course which brings the moving body to the place where its motion began.“This continual circulation of human things.” — Swift.
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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.
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3.
Currency; circulating coin; notes, bills, etc., current for coin.
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4.
The extent to which anything circulates or is circulated; the measure of diffusion; as, the circulation of a newspaper.
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5.
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.(Physiol.)