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We found 51 dictionaries with English definitions that include the word diameter: Click on the first link on a line below to go directly to a page where "diameter" is defined. General (30 matching dictionaries) diameter: American Heritage Dictionary of the English Language [home, info] diameter: Collins English Dictionary [home, info] diameter: Vocabulary.com [home, info] diameter: Macmillan Dictionary [home, info] diameter: Merriam-Webster's Online Dictionary, 11th Edition [home, info] Diameter, diameter: Wordnik [home, info] diameter: Cambridge Advanced Learner's Dictionary [home, info] Diameter: Wiktionary [home, info] diameter: Compact Oxford English Dictionary [home, info] diameter: Webster's New World College Dictionary, 4th Ed. [home, info] diameter: The Wordsmyth English Dictionary-Thesaurus [home, info] diameter: Infoplease Dictionary [home, info] diameter: Dictionary.com [home, info] diameter: Online Etymology Dictionary [home, info] diameter: UltraLingua English Dictionary [home, info] diameter: Cambridge Dictionary of American English [home, info] DIAMETER, Diameter (geometry), Diameter (graph theory), Diameter (protocol), Diameter (symbol): Wikipedia, the Free Encyclopedia [home, info] Diameter: Online Plain Text English Dictionary [home, info] diameter: Webster's Revised Unabridged, 1913 Edition [home, info] diameter: Rhymezone [home, info] diameter, diameter (de): AllWords.com Multi-Lingual Dictionary [home, info] diameter: Webster's 1828 Dictionary [home, info] Diameter: 1911 edition of the Encyclopedia Britannica [home, info] diameter: Free Dictionary [home, info] diameter: Mnemonic Dictionary [home, info] diameter: WordNet 1.7 Vocabulary Helper [home, info] diameter: LookWAYup Translating Dictionary/Thesaurus [home, info] diameter: Dictionary/thesaurus [home, info] Art (1 matching dictionary) diameter: ArtLex Lexicon of Visual Art Terminology [home, info] Business (2 matching dictionaries) Diameter: Construction Term Glossary [home, info] diameter: Legal dictionary [home, info] Computing (4 matching dictionaries) diameter: Free On-line Dictionary of Computing [home, info] diameter: Dictionary of Algorithms and Data Structures [home, info] DIAMETER: Linktionary Networking Glossary [home, info] diameter: Encyclopedia [home, info] Medicine (5 matching dictionaries) diameter: Breast Cancer Talking Dictionary [home, info] diameter: online medical dictionary [home, info] diameter: Dictionary of Cancer Terms [home, info] diameter: Medical dictionary [home, info] diameter: Hyperdictionary [home, info] Miscellaneous (1 matching dictionary) diameter: Encyclopedia of Graphic Symbols [home, info] Science (4 matching dictionaries) Diameter: Eric Weisstein's World of Mathematics [home, info] diameter: Mars Glossary [home, info] diameter, diameter, diameter, diameter, diameter (of a graph): PlanetMath Encyclopedia [home, info] diameter (dia, X, or ×): How Many? A Dictionary of Units of Measurement [home, info] Slang (1 matching dictionary) diameter: Urban Dictionary [home, info] Sports (1 matching dictionary) Diameter: Sports Definitions [home, info] Tech (2 matching dictionaries) Diameter: AUTOMOTIVE TERMS [home, info] Diameter (inches): National Weather Service Glossary [home, info]

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (diameter) ▸ noun:  the length of a straight line passing through the center of a circle and connecting two points on the circumference ▸ noun:  a straight line connecting the center of a circle with two points on its perimeter (or the center of a sphere with two points on its surface) ▸ Word origin