Etymology

viscosity

vis·cos·i·ty
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Today it means: The state of being viscous. Full definition →

Middle French viscosité ← Old French viscosité ← Medieval Latin viscositas
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The story

  1. Medieval Latin · derived fromviscositas
  2. Old French · derived fromviscosité
  3. Middle French · borrowed fromviscosité
  4. English todayviscosity

From Middle French viscosité, from Old French viscosité, from Medieval Latin viscositas; analysable as viscous + -ity.

Etymology from Wiktionary, CC BY-SA 4.0.