lumisterol
noun
lu·mis·ter·ol
lü-ˈmis-tə-ˌrȯl 
-ˌrōl
-ˌrōl
: a crystalline compound stereoisomeric with ergosterol from which it is formed by ultraviolet irradiation as an intermediate product in the production of tachysterol and vitamin D2
Cite this Entry
“Lumisterol.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/lumisterol. Accessed 31 Oct. 2025.
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