feldspar feldsher • feldsparphyre · · · Info · Definitions · Synonyms · Characters · · feldspar · · Text Latin · · Script 8 · · Length Definitions · · · (noun) any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium. Synonyms: felspar. · · Noun Definition 1 Synonyms · · · felspar · · Synonym 1 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 f latin small letter f U+0066 l latin small letter l U+006C p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073