/ Dictionary / Index M martempering: Meaning and Definition of Find definitions for: mar•tem•per•ing Pronunciation: (mär'tem-pur-ing), [key] — n. Metall. a quenching process used to harden austenitic steel. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Martello tower marten 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