Etymology

calcareous

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Today it means: Resembling, containing, or composed of calcium carbonate or limestone; chalky. Full definition →

Latin calcārius
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The story

  1. Latin · learned borrowing fromcalcārius“of or pertaining to lime”
  2. English todaycalcareous

Learned borrowing from Latin calcārius (“of or pertaining to lime”), derived from calx (“lime”). Similar to calcium.

Etymology from Wiktionary, CC BY-SA 4.0.