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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 (30 matching dictionaries)

1. rational: Merriam-Webster.com [home, info]
2. rational: Oxford Dictionaries [home, info]
3. rational: American Heritage Dictionary of the English Language [home, info]
4. rational: Collins English Dictionary [home, info]
5. rational: Vocabulary.com [home, info]
6. rational: Macmillan Dictionary [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 (2 matching dictionaries)

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

Business (4 matching dictionaries)

31. rational: Glossary of Legal Terms [home, info]
32. rational: Glossary of research economics [home, info]
33. rational: Legal dictionary [home, info]
34. rational: BusinessDictionary.com [home, info]

Computing (2 matching dictionaries)

35. rational: Free On-line Dictionary of Computing [home, info]
36. rational: Encyclopedia [home, info]

Medicine (2 matching dictionaries)

37. rational: online medical dictionary [home, info]
38. rational: Medical dictionary [home, info]

Religion (1 matching dictionary)

39. RATIONAL: Irivng Hexham's Concise Dictionary of Religion [home, info]

Science (3 matching dictionaries)

40. rational: MATH SPOKEN HERE! [home, info]
41. rational: PlanetMath Encyclopedia [home, info]
42. rational: FOLDOP - Free On Line Dictionary Of Philosophy [home, info]

Slang (1 matching dictionary)

43. rational: Urban Dictionary [home, info]

(Note: See rationals for more definitions.)

Quick definitions from Macmillan ( ) Provided by 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") ▸ Also see rationals ▸ Word origin ▸ Words similar to rational ▸ Usage examples for rational ▸ Popular nouns described by rational ▸ Words that often appear near rational ▸ Rhymes of rational ▸ Invented words related to rational