Breadcrumb Home > Thesaurus > F Synonyms of felspar Find synonyms for: Noun 1. feldspar, felspar, spar usage: any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of felspar (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: eponymous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language