English dictionary



Hint: Wildcards can be used multiple times in a query.

English noun: perpetual motion machine

1. perpetual motion machine (artifact) a machine that can continue to do work indefinitely without drawing energy from some external source; impossible under the law of conservation of energy


Broader (hypernym)machine









Based on WordNet 3.0 copyright © Princeton University.
Web design: Orcapia v/Per Bang. English edition: .
2024 onlineordbog.dk