Usually means: Single unit or individual entity.
Definitions Related words Phrases (New!) Mentions Lyrics History Colors (New!)
We found 48 dictionaries that define the word one:

General (30 matching dictionaries)
  1. -one: Merriam-Webster.com
  2. one, the one: Oxford Learner's Dictionaries
  3. one: American Heritage Dictionary of the English Language
  4. -one, one, the one: Collins English Dictionary
  5. one: Vocabulary.com
  6. ONe, One, One, One, -one, one, one, one, one, one, one, one, one, one, oNe, the-one: Wordnik
  7. one: Cambridge Advanced Learner's Dictionary
  8. -one, one, the one: Wiktionary
  9. -one, one: Webster's New World College Dictionary, 4th Ed.
  10. -one, one: The Wordsmyth English Dictionary-Thesaurus
  11. one: Infoplease Dictionary
  12. One-, One, -one, one: Dictionary.com
  13. one: Online Etymology Dictionary
  14. one: Cambridge Essential American English Dictionary
  15. O.N.E. (song), ONE, One (A Chorus Line song), One (Ahmad Jamal album), One (Aimer song), One (Alanis Morissette song), One (Always Hardcore), One (Angela Aki EP), One (Arashi album), One (Australian TV channel), One (Bach novel), One (Bee Gees album), One (Bee Gees song), One (Blake's Got a New Face), One (Bob James album), One (Canadian TV channel), One (Casualty), One (Creed song), One (Crossan novel), One (Cursed album), One (Dirty Vegas album), One (Ed Sheeran song), One (Edita Abdieski album), One (Fat Joe song), One (Filter song), One (German TV channel), One (Harry Nilsson song), One (Hellbound), One (Hillsong United EP), One (Ida Corr album), One (Johnny Cash song), One (Maher Zain album), One (Maltese TV channel), One (Mary J. Blige single), One (Metallica song), One (N-Gage game), One (Neal Morse album), One (NoMeansNo album), One (Nomeansno album), One (Oldominion album), One (Ra EP), One (Sky Ferreira song), One (South Korean singer), One (Southeast Asia TV channel), One (Swedish House Mafia song), One (Tesseract album), One (The Never Ending EP), One (The Panic Channel album), One (Three Dog Night song), One (Tying Tiffany EP), One (U2 Song), One (U2 song), One (Yuval Ron album), One (band), One (disambiguation), One (number), One (opera), One (pronoun), One (radio series), One (rapper), One (sixth form college), One (song), One (song) (disambiguation), One (video game), One (website), One (word), One, The ONE, (Not) The One, The One (Afgansyah Reza album), The One (Backstreet Boys song), The One (Chubb Rock album), The One (Colombo), The One (EP), The One (Elton John album), The One (Elton John song), The One (Foo Fighters song), The One (Frankie J album), The One (GOOD Music song), The One (Kodaline song), The One (Kylie Minogue song), The One (Mary J. Blige song), The One (Neoplatonism), The One (Sasha album), The One (Shakira song), The One (Shinichi Osawa album), The One (Slaughterhouse song), The One (TV channel), The One (Tamar Braxton song), The One (The Chainsmokers song), The One (Toronto), The One (Trina album), The One (Uverworld album), The One (Yandel album), The One (band), The One (comics), The One (company), The One (disambiguation), The One (film), The One (magazine), The One (shopping centre), The One (singer), The One (video), The One, The one, -one, .one, .one (domain), .one (top-level domain): Wikipedia, the Free Encyclopedia
  16. One, -one: Online Plain Text English Dictionary
  17. one: Webster's Revised Unabridged, 1913 Edition
  18. one: Rhymezone
  19. one: AllWords.com Multi-Lingual Dictionary
  20. one: Webster's 1828 Dictionary
  21. -one, one: MyWord.info
  22. ONE, one: Stammtisch Beau Fleuve Acronyms
  23. one: Free Dictionary
  24. one: Mnemonic Dictionary
  25. one, one-: Dictionary/thesaurus
  26. One (manga artist): Wikipedia, the Free Encyclopedia
  27. one: Merriam-Webster.com
  28. -one: Oxford Learner's Dictionaries

Art (2 matching dictionaries)
  1. The Organon: A Conceptually Indexed Dictionary (by Genus and Differentia) (No longer online)
  2. One: Dictionary of Symbolism

Business (2 matching dictionaries)
  1. one: Legal dictionary
  2. one: Financial dictionary

Computing (1 matching dictionary)
  1. -one, one: Encyclopedia

Medicine (2 matching dictionaries)
  1. ONE: Vocabulary of Loss: Suicide, Grief, and Ethics
  2. -one, one: Medical dictionary

Miscellaneous (5 matching dictionaries)
  1. Sound-Alike Words (No longer online)
  2. ONE: Acronym Finder
  3. ONE: Three Letter Words with definitions
  4. AbbreviationZ (No longer online)
  5. one: Idioms

Science (2 matching dictionaries)
  1. One: Eric Weisstein's World of Mathematics
  2. one: MATH SPOKEN HERE!

Slang (2 matching dictionaries)
  1. one, one, one, one, one: Green’s Dictionary of Slang
  2. O.N.E, The One: Urban Dictionary

Tech (2 matching dictionaries)
  1. AUTOMOTIVE TERMS (No longer online)
  2. DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations (No longer online)

(Note: See 1 as well.)

Definitions from Wiktionary (
)
American English Definition British English Definition
noun:  The digit or figure 1.
noun:  (by ellipsis) Used to briefly refer to a noun phrase understood by context
noun:  (US) A one-dollar bill.
noun:  One o'clock, either a.m. or p.m.
noun:  (cricket) One run scored by hitting the ball and running between the wickets; a single.
noun:  A joke or amusing anecdote.
noun:  (followed by for) A person (having some specified characteristic or attribute).
noun:  (colloquial) A particularly special or compatible person or thing.
noun:  (dated, euphemistic or derogatory) A gay person.
noun:  (mathematics) The identity element with respect to multiplication in a ring.
adjective:  Of a period of time, being particular.
adjective:  Being a single, unspecified thing; a; any.
adjective:  Sole, only.
adjective:  Whole, entire.
adjective:  In agreement.
adjective:  The same.
verb:  To cause to become one; to gather into a single whole; to unite.
noun:  (Internet slang, leetspeak, sarcastic) Deliberate misspelling of !. Used to amplify an exclamation, parodying unskilled typists who forget to press the shift key while typing exclamation points, thus typing "1".

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