Definition of feldspar noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈfeldspɑː(r)//
; NAmE NAmE//ˈfeldspɑːr//
[uncountable, countable]
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a type of white or red rock Word Originmid 18th cent.: alteration of German Feldspat, Feldspath, from Feld ‘field’ + Spat, Spath ‘spar’ . The form felspar is by mistaken association with German Fels ‘rock’.
See the Oxford Advanced American Dictionary entry: feldspar