lumisterol

noun
lu·​mis·​ter·​ol | \ lü-ˈmis-tə-ˌrȯl How to pronounce lumisterol (audio) , -ˌrōl How to pronounce lumisterol (audio) \

Medical Definition of lumisterol

: 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

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