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We found 22 dictionaries with English definitions that include the word perpetual motion:
Click on the first link on a line below to go directly to a page where "perpetual motion" is defined.

General dictionaries General (18 matching dictionaries)
  1. perpetual motion: Merriam-Webster.com [home, info]
  2. perpetual motion: Oxford Dictionaries [home, info]
  3. perpetual motion: American Heritage Dictionary of the English Language [home, info]
  4. perpetual motion: Collins English Dictionary [home, info]
  5. perpetual motion: Vocabulary.com [home, info]
  6. perpetual-motion, perpetual motion: Wordnik [home, info]
  7. perpetual motion: Wiktionary [home, info]
  8. perpetual motion: The Wordsmyth English Dictionary-Thesaurus [home, info]
  9. perpetual motion: Infoplease Dictionary [home, info]
  10. Perpetual motion, perpetual motion: Dictionary.com [home, info]
  11. Perpetual Motion (album), Perpetual Motion (film), Perpetual Motion (solitaire), Perpetual-motion, Perpetual motion (disambiguation), Perpetual motion: Wikipedia, the Free Encyclopedia [home, info]
  12. perpetual motion: Rhymezone [home, info]
  13. Perpetual Motion: 1911 edition of the Encyclopedia Britannica [home, info]
  14. perpetual motion: Free Dictionary [home, info]
  15. perpetual motion: Mnemonic Dictionary [home, info]
  16. perpetual motion: LookWAYup Translating Dictionary/Thesaurus [home, info]
  17. perpetual motion: Dictionary/thesaurus [home, info]
  18. Perpetual Motion: Dictionary of Phrase and Fable (1898) [home, info]

Computing dictionaries Computing (1 matching dictionary)
  1. Perpetual-motion, Perpetual motion: Encyclopedia [home, info]

Miscellaneous dictionaries Miscellaneous (1 matching dictionary)
  1. Perpetual Motion: Brilliant Dream Dictionary [home, info]

Slang dictionaries Slang (1 matching dictionary)
  1. perpetual motion: Urban Dictionary [home, info]

Tech dictionaries Tech (1 matching dictionary)
  1. Perpetual motion: AUTOMOTIVE TERMS [home, info]

(Note: See perpetual_motions for more definitions.)

Quick definitions from WordNet (perpetual motion)

noun:  motion that continues indefinitely without any external source of energy; impossible in practice because of friction

▸ Also see perpetual_motions

Words similar to perpetual motion

Usage examples for perpetual motion

Words that often appear near perpetual motion

Rhymes of perpetual motion

Invented words related to perpetual motion

Phrases that include perpetual motion:   perpetual motion of the first kind

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