cholecalciferol
noun
cho·le·cal·cif·er·ol ˌkō-lə-(ˌ)kal-ˈsi-fə-ˌrȯl 
-ˌrōl
: a sterol C27H43OH that is a natural form of vitamin D found especially in fish, egg yolks, and fish-liver oils and is formed in the skin on exposure to sunlight or ultraviolet rays
called also vitamin D3
Example Sentences
Recent Examples on the Web There are two main forms of vitamin D: D2 (ergocalciferol) and D3 (cholecalciferol). 
Valerie Agyeman, Good Housekeeping, 1 Sep. 2022
Valerie Agyeman, Good Housekeeping, 1 Sep. 2022 Word History
Etymology
International Scientific Vocabulary
First Known Use
1955, in the meaning defined above
Medical Definition
cholecalciferol
noun
cho·le·cal·cif·er·ol ˌkō-lə-(ˌ)kal-ˈsif-ə-ˌrȯl, -ˌrōl
: a sterol C27H43OH that is a natural form of vitamin D found especially in fish, egg yolks, and fish-liver oils and is formed in the skin on exposure to sunlight or ultraviolet rays
called also vitamin D, vitamin D3
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