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perpetual motion machine. In DICTIOUS you will not only get to know all the dictionary meanings for the word
perpetual motion machine, but we will also tell you about its etymology, its characteristics and you will know how to say
perpetual motion machine in singular and plural. Everything you need to know about the word
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English
Noun
perpetual motion machine (plural perpetual motion machines)
- (physics, pseudoscience) A hypothetical, pseudoscientific device that exhibits perpetual motion, especially one that does useful work with no input of energy.
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