Here is The Hillâs look at who is most likely to claim the nomination next year. The race for the Republican presidential nomination is heating up, with the first GOP debate just three months away.
1 Circulation (journal), a journal published by the American Heart Association. 2  Library circulation, the activities around the lending of library books and other material to users of a lending library.  Magazine circulation, the average number of copies of a periodical distributed per edition/ volume.
Definition of pulmonary circulation. : the passage of blood from the right side of the heart through arteries to the lungs where it picks up oxygen and is returned to the left side of the heart by veins.