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We found 52 dictionaries with English definitions that include the word impact:
Click on the first link on a line below to go directly to a page where "impact" is defined.

General dictionaries General (32 matching dictionaries)
  1. impact: Merriam-Webster.com [home, info]
  2. impact: Oxford Learner's Dictionaries [home, info]
  3. impact: American Heritage Dictionary of the English Language [home, info]
  4. impact: Collins English Dictionary [home, info]
  5. impact: Vocabulary.com [home, info]
  6. impact, impact: Macmillan Dictionary [home, info]
  7. Impact, impact: Wordnik [home, info]
  8. impact: Cambridge Advanced Learner's Dictionary [home, info]
  9. impact: Wiktionary [home, info]
  10. impact: Webster's New World College Dictionary, 4th Ed. [home, info]
  11. impact: The Wordsmyth English Dictionary-Thesaurus [home, info]
  12. impact: Infoplease Dictionary [home, info]
  13. Impact, impact: Dictionary.com [home, info]
  14. impact (v.): Online Etymology Dictionary [home, info]
  15. Impact, impact: UltraLingua English Dictionary [home, info]
  16. impact: Cambridge Dictionary of American English [home, info]
  17. IMPACT (computer graphics), IMPACT (organisation), IMPACT, Impact (EC Comics), Impact (EP), Impact (TV miniseries), Impact (TV programme), Impact (UNESCO magazine), Impact (band), Impact (custom car), Impact (film), Impact (mechanics), Impact (miniseries), Impact (novel), Impact (student magazine), Impact (typeface), Impact (video game player), Impact: Wikipedia, the Free Encyclopedia [home, info]
  18. impact: Cambridge International Dictionary of Phrasal Verbs [home, info]
  19. Impact: Online Plain Text English Dictionary [home, info]
  20. impact: Webster's Revised Unabridged, 1913 Edition [home, info]
  21. impact: Rhymezone [home, info]
  22. impact, impact (de), impact (f): AllWords.com Multi-Lingual Dictionary [home, info]
  23. impact: Webster's 1828 Dictionary [home, info]
  24. IMPACT, impact: Stammtisch Beau Fleuve Acronyms [home, info]
  25. impact: Free Dictionary [home, info]
  26. impact: Hutchinson Dictionaries [home, info]
  27. impact: Mnemonic Dictionary [home, info]
  28. impact: WordNet 1.7 Vocabulary Helper [home, info]
  29. impact: LookWAYup Translating Dictionary/Thesaurus [home, info]
  30. impact: Dictionary/thesaurus [home, info]

Business dictionaries Business (4 matching dictionaries)
  1. Impact: MoneyGlossary.com [home, info]
  2. Impact: Construction Term Glossary [home, info]
  3. impact: Legal dictionary [home, info]
  4. impact: BusinessDictionary.com [home, info]

Computing dictionaries Computing (3 matching dictionaries)
  1. Impact: Cybernetics and Systems [home, info]
  2. Impact: Internet Terms [home, info]
  3. impact: Encyclopedia [home, info]

Medicine dictionaries Medicine (4 matching dictionaries)
  1. Impact: MedTerms.com Medical Dictionary [home, info]
  2. impact: online medical dictionary [home, info]
  3. IMPACT: Medical dictionary [home, info]
  4. Impact: Drug Medical Dictionary [home, info]

Miscellaneous dictionaries Miscellaneous (4 matching dictionaries)
  1. IMPACT: Navajo Code Talkers' Dictionary [home, info]
  2. IMPACT: Acronym Finder [home, info]
  3. IMPACT: AbbreviationZ [home, info]
  4. impact: Idioms [home, info]

Science dictionaries Science (1 matching dictionary)
  1. impact: Evolution Glossary [home, info]

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

Sports dictionaries Sports (1 matching dictionary)
  1. impact: Golfer's Dictionary [home, info]

Tech dictionaries Tech (2 matching dictionaries)
  1. Impact: AUTOMOTIVE TERMS [home, info]
  2. Impact: National Glass Association Glossary [home, info]

(Note: See impacts for more definitions.)

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (impact)

noun:  the striking of one body against another
noun:  a forceful consequence; a strong effect ("The book had an important impact on my thinking")
noun:  the violent interaction of individuals or groups entering into combat
noun:  influencing strongly
verb:  press or wedge together; pack together
verb:  have an effect upon

▸ Also see impacts
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Phrases that include impact:   environmental impact assessment, impact crater, environmental impact, charpy impact test, ecological impact, more...

Words similar to impact:   affect, encroachment, impacted, impacter, impacting, impactive, impactor, impingement, shock, touch, bear on, bear upon, collision, touch on, more...

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