Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps


Noun: perpetual motion
  1. Motion that continues indefinitely without any external source of energy; impossible in practice because of friction

Type of: motion

Encyclopedia: Perpetual motion

Nearest

perpend
perpendicular
perpendicular style
perpendicularity
perpendicularly
perpetrate
perpetration
perpetrator
perpetual
perpetual calendar
perpetual motion
perpetual motion machine
perpetual spinach
perpetual warrant
perpetually
perpetuate
perpetuation
perpetuity
perphenazine
perplex
perplexed