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We found 45 dictionaries with English definitions that include the word rational:
Click on the first link on a line below to go directly to a page where "rational" is defined.

General dictionaries General (30 matching dictionaries)
  1. rational: Oxford Dictionaries [home, info]
  2. rational: American Heritage Dictionary of the English Language [home, info]
  3. rational: Collins English Dictionary [home, info]
  4. rational: Vocabulary.com [home, info]
  5. rational: Macmillan Dictionary [home, info]
  6. rational: Merriam-Webster's Online Dictionary, 11th Edition [home, info]
  7. Rational, rational: Wordnik [home, info]
  8. rational: Cambridge Advanced Learner's Dictionary [home, info]
  9. Rational: Wiktionary [home, info]
  10. rational: Webster's New World College Dictionary, 4th Ed. [home, info]
  11. rational: The Wordsmyth English Dictionary-Thesaurus [home, info]
  12. rational: Infoplease Dictionary [home, info]
  13. rational: Dictionary.com [home, info]
  14. rational: Online Etymology Dictionary [home, info]
  15. rational: UltraLingua English Dictionary [home, info]
  16. rational: Cambridge Dictionary of American English [home, info]
  17. Rational (disambiguation), Rational: Wikipedia, the Free Encyclopedia [home, info]
  18. Rational: Online Plain Text English Dictionary [home, info]
  19. rational: Webster's Revised Unabridged, 1913 Edition [home, info]
  20. rational: Rhymezone [home, info]
  21. rational, rational: AllWords.com Multi-Lingual Dictionary [home, info]
  22. rational: Webster's 1828 Dictionary [home, info]
  23. rational: Free Dictionary [home, info]
  24. rational: Mnemonic Dictionary [home, info]
  25. rational: WordNet 1.7 Vocabulary Helper [home, info]
  26. rational: LookWAYup Translating Dictionary/Thesaurus [home, info]
  27. rational: Dictionary/thesaurus [home, info]
  28. rational: Wikimedia Commons US English Pronunciations [home, info]

Art dictionaries Art (2 matching dictionaries)
  1. rational: ArtLex Lexicon of Visual Art Terminology [home, info]
  2. rational: The Organon: A Conceptually Indexed Dictionary (by Genus and Differentia) [home, info]

Business dictionaries Business (4 matching dictionaries)
  1. rational: Glossary of Legal Terms [home, info]
  2. rational: Glossary of research economics [home, info]
  3. rational: Legal dictionary [home, info]
  4. rational: BusinessDictionary.com [home, info]

Computing dictionaries Computing (2 matching dictionaries)
  1. rational: Free On-line Dictionary of Computing [home, info]
  2. rational: Encyclopedia [home, info]

Medicine dictionaries Medicine (2 matching dictionaries)
  1. rational: online medical dictionary [home, info]
  2. rational: Medical dictionary [home, info]

Religion dictionaries Religion (1 matching dictionary)
  1. RATIONAL: Irivng Hexham's Concise Dictionary of Religion [home, info]

Science dictionaries Science (3 matching dictionaries)
  1. rational: MATH SPOKEN HERE! [home, info]
  2. rational: PlanetMath Encyclopedia [home, info]
  3. rational: FOLDOP - Free On Line Dictionary Of Philosophy [home, info]

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

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (rational)

adjective:  having its source in or being guided by the intellect (distinguished from experience or emotion) ("A rational analysis")
adjective:  consistent with or based on or using reason ("Rational behavior")
adjective:  capable of being expressed as a quotient of integers ("Rational numbers")
adjective:  of or associated with or requiring the use of the mind ("The triumph of the rational over the animal side of man")

Word origin

Phrases that include rational:   rational basis, non uniform rational b spline, rational inference, rational root theorem, post rational, more...

Words similar to rational:   intellectual, rationally, rationalness, sane, more...

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