tachysterol
noun
ta·chys·ter·ol
ta-ˈkist-ə-ˌrȯl 
-ˌrōl
-ˌrōl
: an oily liquid alcohol C28H43OH isomeric with ergosterol that is formed by ultraviolet irradiation of ergosterol or lumisterol and that on further irradiation yields vitamin D2 see dihydrotachysterol
Cite this Entry
“Tachysterol.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/tachysterol. Accessed 4 Nov. 2025.
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