verb (used with object)

to go or move around; make the circuit of.

verb (used without object)

to go or move in a circuit.


    ride circuit, Law. (of a judge) to travel a judicial county or district in order to conduct judicial proceedings.

Origin of circuit

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; cf. ambit, exit1
Related formscir·cuit·al, adjectivemin·i·cir·cuit, nounmul·ti·cir·cuit, nounmul·ti·cir·cuit·ed, adjectivenon·cir·cuit·ed, adjectivesub·cir·cuit, noun

Synonyms for circuit Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for circuit

Contemporary Examples of circuit

Historical Examples of circuit

British Dictionary definitions for circuit



  1. a complete route or course, esp one that is curved or circular or that lies around an object
  2. the area enclosed within such a route
the act of following such a routewe made three circuits of the course
  1. a complete path through which an electric current can flow
  2. (as modifier)a circuit diagram
  1. a periodical journey around an area, as made by judges, salesmen, etc
  2. the route traversed or places visited on such a journey
  3. the persons making such a journey
an administrative division of the Methodist Church comprising a number of neighbouring churches
English law one of six areas into which England is divided for the administration of justice
a number of theatres, cinemas, etc, under one management or in which the same film is shown or in which a company of performers plays in turn
  1. a series of tournaments in which the same players regularly take partthe international tennis circuit
  2. the circuitthe contestants who take part in such a series
mainly British a motor racing track, usually of irregular shape


to make or travel in a circuit around (something)
Derived Formscircuital, adjective

Word Origin for circuit

C14: from Latin circuitus a going around, from circumīre, from circum around + īre to go
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for circuit

late 14c., "a going around; a line going around," from Old French circuit (14c.) "a circuit; a journey (around something)," from Latin circuitus "a going around," from stem of circuire, circumire "go around," from circum "round" (see circum-) + ire "to go" (see ion). Electrical sense is from 1746. Of judicial assignments, from 1570s; of venues for itinerant entertainers, from 1834. Circuit breaker is recorded from 1874. Related: Circuital.


"to go around," early 15c., from circuit (n.). Related: Circuited; circuiting.

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for circuit



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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.