feldspathoid

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noun

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.

OriginGerman Feldspath →
Scrabble 22
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Meanings

nounfeldspathoid (countable and uncountable, plural feldspathoids)

plural feldspathoids · alternative foid

  1. countableuncountablechemistryAny 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.
adjectivefeldspathoid (not comparable)

alternative foid

  1. not comparablechemistryResembling a feldspar.

Origin

  1. GermanFeldspath“feldspar”
  2. Englishfeldspathoid

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

More words from German

Full word history & related roots →
Cite this entry
APA

feldspathoid. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/feldspathoid

MLA

“feldspathoid.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/feldspathoid. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “feldspathoid,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/feldspathoid.

Source: feldspathoid on Wiktionary, CC BY-SA 4.0.