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We found 17 dictionaries with English definitions that include the word conchoid: Click on the first link on a line below to go directly to a page where "conchoid" is defined. General (14 matching dictionaries) conchoid: Collins English Dictionary [home, info] conchoid: Wordnik [home, info] conchoid: Webster's New World College Dictionary, 4th Ed. [home, info] conchoid: Infoplease Dictionary [home, info] Conchoid, conchoid: Dictionary.com [home, info] conchoid: UltraLingua English Dictionary [home, info] Conchoid (mathematics), Conchoid (mineralogy), Conchoid: Wikipedia, the Free Encyclopedia [home, info] Conchoid: Online Plain Text English Dictionary [home, info] conchoid: Webster's Revised Unabridged, 1913 Edition [home, info] Conchoid: AllWords.com Multi-Lingual Dictionary [home, info] conchoid: Webster's 1828 Dictionary [home, info] Conchoid: 1911 edition of the Encyclopedia Britannica [home, info] conchoid: Free Dictionary [home, info] conchoid: Dictionary/thesaurus [home, info] Computing (1 matching dictionary) Conchoid (mathematics), conchoid: Encyclopedia [home, info] Science (2 matching dictionaries) Conchoid: Eric Weisstein's World of Mathematics [home, info] conchoid: PlanetMath Encyclopedia [home, info]

Quick definitions (conchoid) (n.) A curve, of the fourth degree, first made use of by the Greek geometer, Nicomedes, who invented it for the purpose of trisecting an angle and duplicating the cube. (This definition is from the 1913 Webster's Dictionary and may be outdated.)