the route followed, places visited, or district covered by such a journey.
7.
the line going around or bounding any area or object; the distance about an area or object.
8.
the space within a bounding line; district: the circuit of the valley.
9.
Electricity.
a.
Also called electric circuit.the complete path of an electric current, including the generating apparatus, intervening resistors, or capacitors.
b.
any well-defined segment of a complete circuit.
10.
Telecommunications. a means of transmitting communication signals or messages, usually comprising two channels for interactive communication. Compare channel1(def. 12).
11.
a number of theaters, nightclubs, etc., controlled by the same owner or manager or visited in turn by the same entertainers or acting companies.
12.
a league or association: He used to play baseball for the Texas circuit.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a chattering or flighty, light-headed person.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
ride circuit, Law. (of a judge) to travel a judicial county or district in order to conduct judicial proceedings.
Origin: 1350–1400; Middle English < Latin circuitus, variant of circumitus circular motion, cycle, equivalent to circu(m)i-, variant stem of circu(m)īre to go round, circle (circum-circum- + īre to go) + -tus suffix of v. action; compare ambit, exit
1382, from O.Fr. circuit, from L. circuitus "a going around," from stem of circuire, circumire "go around," from circum "around" + -ire "to go." Electrical sense is from 1800. Circuit breaker is recorded from 1874. Circuitry is recorded from 1946.
A closed path through which an electric current flows or may flow. ◇ Circuits in which a power source is connected to two or more components (such as light bulbs, or logic gates in a computer circuit), one after the other, are called series circuits. If the circuit is broken, none of the components receives a current. Circuits in which a power source is directly connected to two or more components are called parallel circuits. If a break occurs in the circuit, only the component along whose path the break occurs stops receiving a current.
A system of electrically connected parts or devices.