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We found 31 dictionaries with English definitions that include the word impaction: Click on the first link on a line below to go directly to a page where "impaction" is defined. General (21 matching dictionaries) impaction: Collins English Dictionary [home, info] impaction: Vocabulary.com [home, info] impaction: Merriam-Webster's Online Dictionary, 11th Edition [home, info] Impaction, impaction: Wordnik [home, info] impaction: Wiktionary [home, info] impaction: Compact Oxford English Dictionary [home, info] impaction: Infoplease Dictionary [home, info] impaction: Dictionary.com [home, info] impaction: UltraLingua English Dictionary [home, info] Impaction: Wikipedia, the Free Encyclopedia [home, info] Impaction: Online Plain Text English Dictionary [home, info] impaction: Webster's Revised Unabridged, 1913 Edition [home, info] impaction: Rhymezone [home, info] Impaction: AllWords.com Multi-Lingual Dictionary [home, info] impaction: Hutchinson's Dictionary of Difficult Words [home, info] impaction: Free Dictionary [home, info] impaction: Hutchinson Dictionaries [home, info] impaction: Mnemonic Dictionary [home, info] impaction: WordNet 1.7 Vocabulary Helper [home, info] impaction: LookWAYup Translating Dictionary/Thesaurus [home, info] Impaction: Dictionary/thesaurus [home, info] Business (1 matching dictionary) impaction: Legal dictionary [home, info] Computing (1 matching dictionary) impaction: Encyclopedia [home, info] Medicine (6 matching dictionaries) Impaction: Merck Manuals [home, info] impaction: Digestive Diseases Dictionary [home, info] impaction: online medical dictionary [home, info] Impaction: Hepatitis C Information Central [home, info] impaction: Medical dictionary [home, info] impaction: Hyperdictionary [home, info] Miscellaneous (1 matching dictionary) impaction: Idioms [home, info] Slang (1 matching dictionary) impaction: Urban Dictionary [home, info]

Quick definitions from WordNet (impaction) ▸ noun:  a disorder in which a tooth is so crowded in its socket that it cannot erupt normally ▸ noun:  a disorder in which feces are impacted in the lower colon ▸ noun:  the condition of being pressed closely together and firmly fixed ▸ noun:  a sharp collision produced by striking or dashing against something