Perpetual-motion-machine Definition
noun
A hypothetical device that exhibits perpetual motion, especially one that does useful work with no input of energy.
Wiktionary
Other Word Forms of Perpetual-motion-machine
Noun
Singular:
perpetual-motion-machine
Plural:
perpetual-motion-machinesRelated Articles
Find Similar Words
Find similar words to perpetual-motion-machine using the buttons below.