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 Those who took vitamin D supplements consumed one of three formulations: calcium-vitamin D, cholecalciferol, or ergocalciferol. —

Alexa Mikhail, Fortune Well, 2 Mar. 2023 The two main forms of vitamin D are vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol). —

Amber Smith, Discover Magazine, 20 Apr. 2022 Vitamin D, also known as cholecalciferol, is a fat-soluble vitamin that plays a vital role in many of the body's functions. —

Amber Smith, Discover Magazine, 22 Apr. 2022 When you are exposed to sunlight, your skin produces cholecalciferol, also known as vitamin D. —

Amber Smith, Discover Magazine, 22 Apr. 2022 Its main ingredient is vitamin D3, known as cholecalciferol, which works to prevent testosterone from being bound to other proteins. —

Dallas News, 1 Feb. 2022 There are two main forms of vitamin D: D2 (ergocalciferol) and D3 (cholecalciferol). —

Valerie Agyeman, Good Housekeeping, 1 Sep. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cholecalciferol.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

Etymology

International Scientific Vocabulary

First Known Use

1955, in the meaning defined above

Time Traveler

The first known use of cholecalciferol was in 1955

See more words from the same year

Dictionary Entries Near cholecalciferol

choleate

cholecalciferol

cholecystectomy

See More Nearby Entries

Cite this Entry

Style

“Cholecalciferol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cholecalciferol. Accessed 25 Mar. 2023.

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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