Noun
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machine that converts other forms of energy into mechanical energy and so imparts motion
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machine any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks
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electric motor a motor that converts electricity to mechanical work
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engine motor that converts thermal energy to mechanical work
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stepping motor,
stepper a horse trained to lift its feet high off the ground while walking or trotting
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a nonspecific agent that imparts motion; "happiness is the aim of all men and the motor of all action"
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agent an active and efficient cause; capable of producing a certain effect; "their research uncovered new disease agents"
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