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We found 43 dictionaries with English definitions that include the word keystone:
Click on the first link on a line below to go directly to a page where "keystone" is defined.

General dictionaries General (31 matching dictionaries)
  1. keystone: Merriam-Webster.com [home, info]
  2. Keystone, keystone: Oxford Learner's Dictionaries [home, info]
  3. keystone: American Heritage Dictionary of the English Language [home, info]
  4. keystone: Collins English Dictionary [home, info]
  5. keystone: Vocabulary.com [home, info]
  6. keystone: Macmillan Dictionary [home, info]
  7. Keystone, keystone: Wordnik [home, info]
  8. keystone: Cambridge Advanced Learner's Dictionary [home, info]
  9. Keystone, keystone: Wiktionary [home, info]
  10. keystone: Webster's New World College Dictionary, 4th Ed. [home, info]
  11. keystone: The Wordsmyth English Dictionary-Thesaurus [home, info]
  12. keystone: Infoplease Dictionary [home, info]
  13. Keystone, keystone: Dictionary.com [home, info]
  14. keystone: Online Etymology Dictionary [home, info]
  15. Keystone, keystone: UltraLingua English Dictionary [home, info]
  16. Keystone (album), Keystone (architecture), Keystone (beer brand), Keystone (disambiguation), Keystone (gasoline automobile), Keystone (limestone), Keystone (steam automobile), Keystone (train), Keystone, The Keystone: Wikipedia, the Free Encyclopedia [home, info]
  17. Keystone: Online Plain Text English Dictionary [home, info]
  18. keystone: Webster's Revised Unabridged, 1913 Edition [home, info]
  19. keystone: Rhymezone [home, info]
  20. keystone: AllWords.com Multi-Lingual Dictionary [home, info]
  21. keystone: Webster's 1828 Dictionary [home, info]
  22. Keystone: 1911 edition of the Encyclopedia Britannica [home, info]
  23. keystone: Free Dictionary [home, info]
  24. keystone: The Phrontistery - A Dictionary of Obscure Words [home, info]
  25. keystone: Mnemonic Dictionary [home, info]
  26. keystone: WordNet 1.7 Vocabulary Helper [home, info]
  27. keystone: LookWAYup Translating Dictionary/Thesaurus [home, info]
  28. keystone: Dictionary/thesaurus [home, info]
  29. Keystone (cask): Wikipedia, the Free Encyclopedia [home, info]

Art dictionaries Art (4 matching dictionaries)
  1. keystone: ArtLex Lexicon of Visual Art Terminology [home, info]
  2. KEYSTONE: The Britannia Lexicon (Middle Ages Glossary) [home, info]
  3. Keystone: Glossary: Gothic Art and Architecture [home, info]
  4. keystone: Glossary of Medieval Art and Architecture [home, info]

Business dictionaries Business (2 matching dictionaries)
  1. Keystone: MoneyGlossary.com [home, info]
  2. Keystone (disambiguation), Keystone (passenger train), Keystone (train), keystone: Legal dictionary [home, info]

Computing dictionaries Computing (2 matching dictionaries)
  1. keystone: CCI Computer [home, info]
  2. Keystone (disambiguation), Keystone (passenger train), Keystone (train), keystone: Encyclopedia [home, info]

Miscellaneous dictionaries Miscellaneous (1 matching dictionary)
  1. Keystone: Castle Terms [home, info]

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

Tech dictionaries Tech (2 matching dictionaries)
  1. Keystone: Glossary of video terms [home, info]
  2. Keystone: Urban Conservation Glossary [home, info]

(Note: See keystones for more definitions.)

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (keystone)

noun:  the central building block at the top of an arch or vault
noun:  a central cohesive source of support and stability ("The keystone of campaign reform was the ban on soft money")

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Phrases that include keystone:   keystone species, keystone cops, keystone correction, keystone joist, keystone markup, more...

Words similar to keystone:   headstone, more...

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