/ Dictionary / Index A AISI steel: Meaning and Definition of Find definitions for: AISI steel Pronunciation: [key] any steel made to conform to the standard chemical compositions generally accepted by the U.S. steel industry and its principal customers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. AISI aisle Related Content Daily Word Quiz: alacrity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language