Etymology

pseudotachylite

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Today it means: A dark, glassy rock generated by frictional heat within faults Full definition →

English tachylite ← Middle English pseudo- ← Ancient Greek ψευδής (pseudḗs)
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The story

  1. Ancient Greekψεύδω (pseúdō)
  2. Ancient Greekψευδής (pseudḗs)
  3. Middle Englishpseudo-
  4. Englishpseudo-
  5. Englishtachylite
  6. English todaypseudotachylite

From pseudo- + tachylite.

Etymology from Wiktionary, CC BY-SA 4.0.