A closed, usually circular line that goes around an object or area. The region enclosed by such a line. See Synonyms at circumference. A path or route the complete traversal of which without local change of direction requires returning to the starting point. The act of following such a path or route. A journey made on such a path or route. Electronics A closed path followed or capable of being followed by an electric current. Electronics A configuration of electrically or electromagnetically connected components or devices. A regular or accustomed course from place to place; a round: a salesperson on the Detroit-Minneapolis-Chicago circuit; a popular speaker on the lecture circuit. The area or district thus covered, especially a territory under the jurisdiction of a judge in which periodic court sessions are held. An association of theaters in which plays, acts, or films move from theater to theater for presentation. A group of nightclubs, show halls, or resorts at which entertainers appear in turn. An association of teams or clubs. A series of competitions held in different places. To make a circuit or circuit of.