Medical Dictionary


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noun cal·ci·tri·ol \ˌkal-sə-ˈtrī-ˌȯl, -ˌōl\

Medical Definition of calcitriol

  1. :  a physiologically active metabolic derivative C27H44O3 of cholecalciferol that is synthesized in the liver and kidney and stimulates the intestinal absorption of calcium—called also 1,25-dihydroxycholecalciferol

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