What is Circuit?

Circuit definition and meaning on Dictionary terms:
an act or instance of going or moving around.
a circular journey or one beginning and ending at the same place; a round.
a roundabout journey or course.
a periodical journey from place to place, to perform certain duties, as by judges to hold court, ministers to preach, or salespeople covering a route.

the persons making such a journey.
the route followed, places visited, or district covered by such a journey.
the line going around or bounding any area or object; the distance about an area or object.
the space within a bounding line; district: the circuit of the valley.
Electricity. Also called electric circuit. the complete path of an electric current, including the generating apparatus, intervening resistors, or capacitors. any well-defined segment of a complete circuit.

Telecommunications. a means of transmitting communication signals or messages, usually comprising two channels for interactive communication.Compare channel1(def 12).
a number of theaters, nightclubs, etc., controlled by the same owner or manager or visited in turn by the same entertainers or acting companies.
a league or association: He used to play baseball for the Texas circuit.

verb (used with object)
to go or move around; make the circuit of.

verb (used without object)
to go or move in a circuit.