/ Dictionary / Index L lanosterol: Meaning and Definition of Find definitions for: la•nos•ter•ol Pronunciation: (lu-nos'tu-rôl", -rol"), [key] — n. Biochem. a sterol, CHO, formed from squalene epoxide, that is a precursor in the biosynthesis of cholesterol and is a component of lanolin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lanose Lanoxin Related Content Daily Word Quiz: menagerie Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language