Etymology

calcitriol

C3A1L1C3I1T1R1I1O1L1

Today it means: A physiologically active metabolic derivative C₂₇H₄₄O₃ of cholecalciferol (1,25-dihydroxycholecalciferol) that is synthesized in the liver and kidney and stimulates the intestinal absorption of calcium. Full definition →

English triol ← Latin calx ← Ancient Greek χᾰ́λῐξ (khắlĭx)bor.?
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The story

  1. Ancient Greekχᾰ́λῐξ (khắlĭx)bor.?
  2. Latincalx
  3. Englishcalcium
  4. Englishcalci-
  5. Englishtriol
  6. English todaycalcitriol

From calci- (“vitamin D derivative”) + triol.

Etymology from Wiktionary, CC BY-SA 4.0.