/ Dictionary / Index S steroid: Meaning and Definition of Find definitions for: ste•roid Pronunciation: (stēr'oid, ster'-), [key] — Biochem. Biochem. —n. any of a large group of fat-soluble organic compounds, as the sterols, bile acids, and sex hormones, most of which have specific physiological action. —adj. pertaining to or characteristic of a steroid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: steroid (Thesaurus) sternwheeler steroidogenesis Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language