felspar

fel·spar  (flspär)

n.

Variant of feldspar.

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felspar

Noun

same as feldspar

Thesaurus

Noun

1.

felspar - any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium feldspar atomic number 14, Si, silicon - a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors orthoclase - a white or colored monoclinic feldspar oligoclase, plagioclase - any of a series of triclinic feldspars that form rocks moonstone - a transparent or translucent gemstone with a pearly luster; some specimens are orthoclase feldspar and others are plagioclase feldspar spar - any of various nonmetallic minerals (calcite or feldspar) that are light in color and transparent or translucent and cleavable