calcitriol

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

Medical Definition of calcitriol 

: 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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