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We found 25 dictionaries with English definitions that include the word undefined:
Click on the first link on a line below to go directly to a page where "undefined" is defined.

General dictionaries General (21 matching dictionaries)
  1. undefined: Merriam-Webster.com [home, info]
  2. undefined: Oxford Learner's Dictionaries [home, info]
  3. undefined: Collins English Dictionary [home, info]
  4. undefined: Vocabulary.com [home, info]
  5. undefined: Macmillan Dictionary [home, info]
  6. Undefined, undefined: Wordnik [home, info]
  7. undefined: Wiktionary [home, info]
  8. undefined: Infoplease Dictionary [home, info]
  9. undefined: Dictionary.com [home, info]
  10. undefined: Online Etymology Dictionary [home, info]
  11. undefined: UltraLingua English Dictionary [home, info]
  12. Undefined (mathematics), Undefined: Wikipedia, the Free Encyclopedia [home, info]
  13. undefined: Rhymezone [home, info]
  14. undefined: Webster's 1828 Dictionary [home, info]
  15. undefined: Free Dictionary [home, info]
  16. undefined: Mnemonic Dictionary [home, info]
  17. undefined: WordNet 1.7 Vocabulary Helper [home, info]
  18. undefined: LookWAYup Translating Dictionary/Thesaurus [home, info]
  19. undefined: Dictionary/thesaurus [home, info]

Business dictionaries Business (1 matching dictionary)
  1. undefined: Legal dictionary [home, info]

Science dictionaries Science (2 matching dictionaries)
  1. Undefined: Eric Weisstein's World of Mathematics [home, info]
  2. undefined: MATH SPOKEN HERE! [home, info]

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

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (undefined)

adjective:  not precisely limited, determined, or distinguished ("An undefined term")

Word origin

Words similar to undefined

Usage examples for undefined

Idioms related to undefined (New!)

Popular nouns described by undefined

Words that often appear near undefined

Rhymes of undefined

Invented words related to undefined

Phrases that include undefined:   undefined external reference, undefined variable, undefined behaviour, undefined medium, undefined reference to sbrk, more...

Words similar to undefined:   vague, more...

Search for undefined on Google or Wikipedia

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