/ Dictionary / Index S stainless steel: Meaning and Definition of Find definitions for: stain'less steel' Pronunciation: [key] alloy steel containing 12 percent or more chromium, so as to be resistant to rust and attack from various chemicals. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. stainless stair Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language