- The definition of a circuit is a closed path or a line forming a boundary.
- An example of circuit is the wires made up of conductors and other components that allow for electricity to travel on wires.
- An example of circuit is the path taken by a judge who officates at several courts.
An electronics circuit board.
circuit definition by Webster's New World
- the line or the length of the line forming the boundaries of an area
- the area bounded
- the act of going around something; course or journey around: the moon's circuit of the earth
- the regular journey of a person performing certain duties, as of an itinerant preacher or a judge holding court at designated places
- the district periodically traveled through in the performance of such duties
- the route traveled
- ☆ the judicial district of a U.S. Court of Appeals
- a number of associated theaters at which plays, movies, etc. are shown in turn
- a group of nightclubs, resorts, etc. at which entertainers appear in turn
- ☆ a sequence of contests or matches held at various places, in which a particular group of athletes compete; also, an association or league of athletic teams: the professional bowlers' circuit
- a complete or partial path over which current may flow
- any hookup, wiring, etc. that is connected into this path, as for radio, television, or sound reproduction
Origin: Middle English ; from Old French ; from Classical Latin circuitus, a going around, circuit ; from circumire ; from circum (see circum-) plush ire, to go: see year
- circuital adjective
circuit definition by American Heritage Dictionary
- a. A closed, usually circular line that goes around an object or area.b. The region enclosed by such a line. See Synonyms at circumference.
- a. A path or route the complete traversal of which without local change of direction requires returning to the starting point.b. The act of following such a path or route.c. A journey made on such a path or route.
- Electronics a. A closed path followed or capable of being followed by an electric current.b. A configuration of electrically or electromagnetically connected components or devices.
- a. 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.b. The area or district thus covered, especially a territory under the jurisdiction of a judge in which periodic court sessions are held.
- a. An association of theaters in which plays, acts, or films move from theater to theater for presentation.b. A group of nightclubs, show halls, or resorts at which entertainers appear in turn.c. An association of teams or clubs.d. A series of competitions held in different places.
Origin: Middle English, circumference, from Old French, from Latin circuitus, a going around, from past participle of circumīre, to go around : circum-, circum- + īre, to go; see ei- in Indo-European roots.
simple electrical circuit system
circuit - Computer Definition
- A closed loop comprising a number of elements such as resistors, capacitors, transistors, and power sources connected together for the purpose of carrying an electrical current.
- An end-to-end communications path between a transmitter and a receiver. Circuit generally implies a logical connection, or session, over a physical medium. Circuit often is used interchangeably with path, link, line, and channel, although the usage can be specific to the underlying technology, the overall context, and other factors. Circuits can be characterized in many ways. For example, a circuit can be either two-wire or fourwire in nature, for either access or transport applications. A circuit can be simplex, half-duplex, or fullduplex in nature. A circuit can be dedicated, switched, or virtual in nature. A circuit sometimes is referred to in the vernacular as a pipe, as in a broadband pipe. See also channel, four-wire circuit, line, link, path, twowire circuit, and virtual circuit.
circuit - Legal Definition
- Historically, a judicial district wherein a judge would travel from town to town to preside over hearings.
- A judicial district established in some states wherein one or more courts have jurisdiction to hear cases.
- One of the twelve judicial districts (along with a special nationwide thirteenth circuit) in which the United States is divided for the appellate review of federal trials by a United States Court of Appeals.
circuit - Science Definition
- 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.
Bulbs in a simple circuit (top) and parallel circuit (bottom left) emit bright light since each is directly connected in its own circuit to a power source. Bulbs in a series circuit (bottom right) emit dim light since each consumes a portion of the battery's power coming through a single circuit.