protolith

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US/ˈpɹoʊ.təˌlɪθ/US/ˈpɹoʊtoʊ-/

noun

The original precursor of any specified metamorphic rock

Scrabble 14
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Meanings

nounprotolith (plural protoliths)

plural protoliths

  1. geographyThe original precursor of any specified metamorphic rock

Synonyms & antonyms

Also see
unmetamorphized

Origin

From proto- + -lith.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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