Any of a group of relatively rare minerals that are chemically very similar to feldspars, but have too little silica to qualify as feldspars.
Other Word Forms of Feldspathoid
Origin of Feldspathoid
feldspath (obsolete variant of feldspar) (from obsolete German Feldspath feldspar feldspar) –oid
From American Heritage Dictionary of the English Language, 5th Edition
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Words Starting With F and Ending With D