| / English Dictionary |
PERPETUAL MOTION MACHINE
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
A machine that can continue to do work indefinitely without drawing energy from some external source; impossible under the law of conservation of energy
Classified under:
Nouns denoting man-made objects
Hypernyms ("perpetual motion machine" is a kind of...):
machine (any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks)
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