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We found 40 dictionaries with English definitions that include the word irrational:
Click on the first link on a line below to go directly to a page where "irrational" is defined.

General dictionaries General (30 matching dictionaries)
  1. irrational: Merriam-Webster.com [home, info]
  2. irrational: Oxford Dictionaries [home, info]
  3. irrational: American Heritage Dictionary of the English Language [home, info]
  4. irrational: Collins English Dictionary [home, info]
  5. irrational: Vocabulary.com [home, info]
  6. irrational: Macmillan Dictionary [home, info]
  7. Irrational, irrational: Wordnik [home, info]
  8. irrational: Cambridge Advanced Learner's Dictionary [home, info]
  9. irrational: Wiktionary [home, info]
  10. irrational: Webster's New World College Dictionary, 4th Ed. [home, info]
  11. irrational: V2 Vocabulary Building Dictionary [home, info]
  12. irrational: The Wordsmyth English Dictionary-Thesaurus [home, info]
  13. irrational: Infoplease Dictionary [home, info]
  14. irrational: Dictionary.com [home, info]
  15. irrational: Online Etymology Dictionary [home, info]
  16. irrational: UltraLingua English Dictionary [home, info]
  17. irrational: Cambridge Dictionary of American English [home, info]
  18. Irrational: Wikipedia, the Free Encyclopedia [home, info]
  19. Irrational: Online Plain Text English Dictionary [home, info]
  20. irrational: Webster's Revised Unabridged, 1913 Edition [home, info]
  21. irrational: Rhymezone [home, info]
  22. irrational, irrational: AllWords.com Multi-Lingual Dictionary [home, info]
  23. irrational: Webster's 1828 Dictionary [home, info]
  24. irrational: Free Dictionary [home, info]
  25. irrational: Mnemonic Dictionary [home, info]
  26. irrational: WordNet 1.7 Vocabulary Helper [home, info]
  27. irrational: LookWAYup Translating Dictionary/Thesaurus [home, info]
  28. irrational: Dictionary/thesaurus [home, info]

Business dictionaries Business (2 matching dictionaries)
  1. irrational: Glossary of Legal Terms [home, info]
  2. irrational: Legal dictionary [home, info]

Computing dictionaries Computing (1 matching dictionary)
  1. irrational: Encyclopedia [home, info]

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

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

Science dictionaries Science (3 matching dictionaries)
  1. irrational: MATH SPOKEN HERE! [home, info]
  2. irrational: PlanetMath Encyclopedia [home, info]
  3. irrational, irrational: Prime [home, info]

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

(Note: See irrationals for more definitions.)

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (irrational)

adjective:  not consistent with or using reason ("Irrational fears")
adjective:  real but not expressible as the quotient of two integers ("Irrational numbers")

▸ Also see irrationals
Word origin

Words similar to irrational

Usage examples for irrational

Popular nouns described by irrational

Words that often appear near irrational

Rhymes of irrational

Invented words related to irrational

Phrases that include irrational:   irrational impulse, irrational numbers, irrational exuberance, irrational call option, and are irrational, more...

Words similar to irrational:   irrationality, irrationally, insane, more...

Search for irrational on Google or Wikipedia

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