Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

Medical Dictionary

tachysterol

noun ta·chys·ter·ol \ ta-ˈkist-ə-ˌrȯl , -ˌrōl \

medical Definition of tachysterol

: 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

Seen and Heard

What made you want to look up tachysterol? Please tell us where you read or heard it (including the quote, if possible).

show hide

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play

Ask the Editors

Word Games