Tra từ circuit - Từ điển Oxford Advanced Learner 8th

cir·cuit [circuit circuits circuited circuiting] BrE [ˈsɜːkɪt] NAmE [ˈsɜːrkɪt] noun
1. a line, route, or journey around a place
•The race ended with eight laps of a city centre circuit.
•The earth takes a year to make a circuit of (= go around) the sun.
2. the complete path of wires and equipment along which an electric current flows
•an electrical circuit
•a circuit diagram (= one showing all the connections in the different parts of the ↑circuit )
see also ↑integrated circuit, ↑printed circuit, ↑short circuit
3. (in sport)a series of games or matches in which the same players regularly take part
•the women's tennis circuit
4. a track for cars or motorcycles to race around
5. a series of places or events of a particular kind at which the same people appear or take part
•the lecture/cabaret circuit
see also ↑closed-circuit television
6. a regular journey made by a judge to hear court cases in each of the courts of law in a particular area
•a circuit court/judge

Word Origin:
late Middle English: via Old French from Latin circuitus, from circuire, variant of circumire ‘go round’, from circum ‘around’ + ire ‘go’.

Example Bank:
•She's a well-known figure on the international lecture circuit.
•Talent scouts spotted him playing on the amateur circuit.
•The lights were not working because of a short circuit.
•We did a complete circuit of the park in twenty minutes.
•Young's film has hit the festival circuit in the US.
•Green Day moves into the lead as they turn into the straight on the first circuit.
•He announced his retirement from the professional circuit last year.
•Runners have to complete fifteen circuits of the two-mile circular course.
•This is her biggest triumph in nine years on the women's tennis circuit.