or flu·or spar

[ floo-awr-spahr, -er- ]
/ ˈflu ɔrˌspɑr, -ər- /

noun Mineralogy.

Origin of fluorspar

First recorded in 1785–95; fluor- + spar3
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for fluorspar

British Dictionary definitions for fluorspar



/ (ˈflʊəˌspɑː) /


a white or colourless mineral sometimes fluorescent and often tinted by impurities, found in veins and as deposits from hot gases. It is used in the manufacture of glass, enamel, and jewellery, and is the chief ore of fluorine. Composition: calcium fluoride. Formula: CaF 2 . Crystal structure: cubicAlso: (US and Canadian) fluorite
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012