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calcitriol

[ kal-si-tree-awl, -ol ]

noun

  1. Biochemistry. a vitamin D compound, C 27 H 44 O 3 , occurring in humans as a hormone derived from cholesterol, that acts in the regulation and absorption of calcium.
  2. Pharmacology. a preparation of this compound, used in the treatment of osteoporosis and bone fracture.


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Word History and Origins

Origin of calcitriol1

1975–80; apparently calci(um) + triol

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calcitonincalcium