calcitriol

/K AE1 L S AH0 T R IY0 AH0 L/
noun
  1. 1

    (biochemistry, pharmacology) 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.