Focus on the pronunciation of circuit
English definition of “circuit”
/ˈsɜr·kət/ n [C] (CLOSED SYSTEM)
› physics a closed system esp. of wires through which electricity can flow: Big electronic circuits can carry huge amounts of data. › A circuit is also a system that allows people to communicate with each other: Holiday phone calls always overload the circuits. circuitry
/ˈsɜr·kə·tri/ n [U] › the connected arrangement of the wires and other parts of a closed system through which electricity can flow: The circuitry in this computer is protected from power surges.