| / English Dictionary |
PERPETUAL MOTION
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
Motion that continues indefinitely without any external source of energy; impossible in practice because of friction
Classified under:
Nouns denoting stable states of affairs
Hypernyms ("perpetual motion" is a kind of...):
motion (a state of change)
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