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We found 50 dictionaries with English definitions that include the word concussion: Click on the first link on a line below to go directly to a page where "concussion" is defined. General (28 matching dictionaries) concussion: American Heritage Dictionary of the English Language [home, info] concussion: Collins English Dictionary [home, info] concussion: Vocabulary.com [home, info] concussion: Macmillan Dictionary [home, info] concussion: Merriam-Webster's Online Dictionary, 11th Edition [home, info] Concussion, concussion: Wordnik [home, info] concussion: Cambridge Advanced Learner's Dictionary [home, info] concussion: Wiktionary [home, info] concussion: Webster's New World College Dictionary, 4th Ed. [home, info] concussion: The Wordsmyth English Dictionary-Thesaurus [home, info] concussion: Infoplease Dictionary [home, info] concussion: Dictionary.com [home, info] concussion: Online Etymology Dictionary [home, info] concussion: UltraLingua English Dictionary [home, info] concussion: Cambridge Dictionary of American English [home, info] Concussion (album), Concussion: Wikipedia, the Free Encyclopedia [home, info] Concussion: Online Plain Text English Dictionary [home, info] concussion: Webster's Revised Unabridged, 1913 Edition [home, info] concussion: Rhymezone [home, info] Concussion: AllWords.com Multi-Lingual Dictionary [home, info] concussion: Webster's 1828 Dictionary [home, info] concussion: Free Dictionary [home, info] concussion: Mnemonic Dictionary [home, info] concussion: WordNet 1.7 Vocabulary Helper [home, info] concussion: LookWAYup Translating Dictionary/Thesaurus [home, info] concussion: Dictionary/thesaurus [home, info] Business (2 matching dictionaries) CONCUSSION: Bouvier's Law Dictionary 1856 Edition [home, info] concussion: Legal dictionary [home, info] Computing (1 matching dictionary) concussion: Encyclopedia [home, info] Medicine (15 matching dictionaries) Concussion: MedTerms.com Medical Dictionary [home, info] Concussion: Merck Manuals [home, info] concussion: online medical dictionary [home, info] CONCUSSION: Probert Encyclopaedia of Medicine [home, info] Concussion: National MCH Center for Child Death Review [home, info] Concussion: MEDLINE plus Illustrated Medical Encyclopedia [home, info] concussion: Neurotrauma Glossary [home, info] concussion: Parents' Common Sense Encyclopedia [home, info] Concussion: A-Z Family health glossary [home, info] concussion: Medical dictionary [home, info] Concussion: Rudy's List of Archaic Medical Terms [home, info] Concussion: University of Maryland Glossary of Medical Terms [home, info] Concussion: Brain Injury [home, info] Concussion: Drug Medical Dictionary [home, info] concussion: Hyperdictionary [home, info] Miscellaneous (2 matching dictionaries) CONCUSSION: Navajo Code Talkers' Dictionary [home, info] Concussion: Brilliant Dream Dictionary [home, info] Slang (1 matching dictionary) concussion: Urban Dictionary [home, info] Sports (1 matching dictionary) Concussion: Sports Definitions [home, info]

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (concussion) ▸ noun:  any violent blow ▸ noun:  injury to the brain caused by a blow; usually resulting in loss of consciousness ▸ Word origin