/ Dictionary / Index S sterol: Meaning and Definition of Find definitions for: ste•rol Pronunciation: (stēr'ôl, -ol, ster'-), [key] — n. Biochem. any of a group of solid, mostly unsaturated, polycyclic alcohols, as cholesterol and ergosterol, derived from plants or animals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sterol (Thesaurus) steroidogenesis stertor Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language