feldspathoid

noun

feld·​spath·​oid

-ˌthȯid

plural -s

: a mineral consisting of an aluminous silicate (as leucite nepheline) that has too little silica to form feldspar

feldspathoidal

¦⸗ˌ⸗¦thȯidᵊl

adjective

Word History

Etymology

International Scientific Vocabulary feldspath + -oid

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