Noun

• S: (n) circulation (the dissemination of copies of periodicals (as newspapers or magazines))
• S: (n) circulation (movement through a circuit; especially the movement of blood through the heart and blood vessels)
• S: (n) circulation ((library science) the count of books that are loaned by a library over a specified period)
• S: (n) circulation (number of copies of a newspaper or magazine that are sold) "by increasing its circulation the newspaper hoped to increase its advertising"
• S: (n) circulation (free movement or passage (as of cytoplasm within a cell or sap through a plant)) "ocean circulation is an important part of global climate"; "a fan aids air circulation"
• S: (n) circulation (the spread or transmission of something (as news or money) to a wider group or area)