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Definition of Perpetual motion
1. Noun. Motion that continues indefinitely without any external source of energy; impossible in practice because of friction.
Generic synonyms: Motion
Definition of Perpetual motion
1. Noun. The motion of some hypothetical device that continues forever with no obvious input of energy in violation of the laws of thermodynamics. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Perpetual Motion
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