feldspathoid

English dictionary entry

Meanings

noun
  1. Any of a small group of igneous, plutonic, and volcanic minerals formed in magma that did not contain enough silica to satisfy all the chemical bonds. Feldspathoids are silica-poor variants of the feldspar group.
adj
  1. Resembling a feldspar.

Word forms

feldspathoid feldspathoids foid

Etymology

From German Feldspath (“feldspar”) + -oid.

Related words

Derived words

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