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Definitions and Synonyms of perpetual motion machine | Another word for perpetual motion machine | What is perpetual motion machine?

Definition 1: a machine that can continue to do work indefinitely without drawing energy from some external source; impossible under the law of conservation of energy - [noun denoting artifact]

(perpetual motion machine is a kind of ...) any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks

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