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We found 21 dictionaries with English definitions that include the word grey matter: Click on the first link on a line below to go directly to a page where "grey matter" is defined. General (15 matching dictionaries) grey matter: Collins English Dictionary [home, info] grey matter: Vocabulary.com [home, info] grey matter: Cambridge Advanced Learner's Dictionary [home, info] grey matter: Wiktionary [home, info] grey matter: Compact Oxford English Dictionary [home, info] grey matter: Dictionary.com [home, info] grey matter: UltraLingua English Dictionary [home, info] Grey Matter (alien), Grey Matter (song), Grey Matter, Grey-matter, Grey matter (disambiguation): Wikipedia, the Free Encyclopedia [home, info] grey matter: Rhymezone [home, info] grey matter: Free Dictionary [home, info] grey matter: Mnemonic Dictionary [home, info] grey matter: WordNet 1.7 Vocabulary Helper [home, info] grey matter: LookWAYup Translating Dictionary/Thesaurus [home, info] grey matter: Dictionary/thesaurus [home, info] Computing (1 matching dictionary) grey matter: Encyclopedia [home, info] Medicine (3 matching dictionaries) grey matter: online medical dictionary [home, info] grey matter: Multiple Sclerosis Encyclopaedia [home, info] grey matter: Medical dictionary [home, info] Miscellaneous (1 matching dictionary) grey matter: Idioms [home, info] Slang (1 matching dictionary) Grey Matter: Urban Dictionary [home, info]

Quick definitions from WordNet (grey matter) ▸ noun:  greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons