Having the form of a circle; round.Moving in or forming a circle, circuit, or round; returning to the starting-point: as, circular motion.Related to the circle: as, circular points. See below.Figuratively, passing through a round or circuit of events or experiences; successive in order and recurrent.Adhering to a certain cycle of legends; cyclic: applied to certain poets. See cyclic.Intended for circulation among certain persons. See circular letter, below.Complete; perfect.Roundabout; circuitous; circumlocutory.n. A letter, notice, or printed paper containing information, or an announcement, or a request, etc., intended for general circulation or for circulation among a particular class or circle of persons; a circular letter: as, a business circular; a diplomatic circular.n. [Cf. cyclas, ciclaton.] ‘A kind of long cape or sleeveless cloak worn by women: as, a fur circular.