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âshort circuitâ in British English. See all translations. short circuitnoun [ C ] uk â /ËÊÉËt ËsÉË.kÉªt/ us â /ËÊÉËrt ËsÉË.kÉªt/ informal short. âº a bad electrical connection that causes the current to flow in the wrong direction, often having the effect of stopping the power supply.
short circuit definition. An electrical circuit in which a path of very low resistance has been opened, usually accidentally. When the resistance drops, the electric current in the circuit becomes very high and can cause damage to the circuit and start fires.