- any one of a tiny selection of igneous, plutonic, and volcanic minerals created in magma that failed to consist of sufficient silica to fulfill all substance bonds. Feldspathoids tend to be silica-poor variants of feldspar group.
- Feldspar or some other types (nephelite, sodalite, leucite, while the scapolites) which plays a similar part within the structure of rocks.
- Resembling a feldspar.
Etymologically Related for "feldspathoid"
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