noun
A device that is used to change the direction of current in an electric motor.
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The commutator in the electric motor helps to reverse the direction of current flow.
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Make sure to check the commutator in the motor for any signs of wear and tear.
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I heard that the commutator in that old car is shot, causing it to have trouble starting.
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In life, the commutator represents the ability to change course and reverse decisions when necessary.