noun, masculine/muv.mɑ̃ pɛʁ.pe.tɥɛl/
perpetual motion (motion of some hypothetical device that continues forever with no external input of energy, in violation of the laws of thermodynamics)
/muv.mɑ̃ pɛʁ.pe.tɥɛl/
perpetual motion (motion of some hypothetical device that continues forever with no external input of energy, in violation of the laws of thermodynamics)