Phrase guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
A hypothetical, pseudoscientific device that exhibits perpetual motion, especially one that does useful work with no input of energy.
Definition source: English Wiktionary via Wiktextract
Topics: literature, media, natural-sciences, physical-sciences, physics, pseudoscience, publishing, science-fiction
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
a machine that can continue to do work indefinitely without drawing energy from some external source; impossible under the law of conservation of energy
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: machine
History
No etymology was provided for this word.
Across languages
20 source translations are retained for this English entry.
