/floor"uyt, flawr"-, flohr"-/ , n.
a common mineral, calcium fluoride, CaF 2 , occurring in green, blue, purple, yellow, or colorless crystals, usually in cubes: the principal source of fluorine, used also as a flux in metallurgy and for ornament. Also called fluor, fluorspar, fluor spar .
[ 1865-70; 1 ]