7-dehydrocholesterol
noun
7-de·hy·dro·cho·les·ter·ol
ˈsev-ən-(ˌ)dē-ˌhī-drō-kə-ˈles-tə-ˌrōl 
-ˌrȯl
-ˌrȯl
: a crystalline steroid alcohol C27H43OH that occurs (as in the skin) chiefly in higher animals and humans and that yields vitamin D3 on irradiation with ultraviolet light
Cite this Entry
“7-dehydrocholesterol.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/7-dehydrocholesterol. Accessed 1 Dec. 2025.
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