feldspathoid

noun feld·spath·oid \-ˌthȯid\

Definition of feldspathoid

plural

-s

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

feldspathoidal

adjective

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Origin and Etymology of feldspathoid

International Scientific Vocabulary feldspath + -oid


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