/ Dictionary / Index N nitriding: Meaning and Definition of Find definitions for: ni•trid•ing Pronunciation: (nī'trī-ding), [key] — n. Metall. a process of casehardening in which nitrogen is introduced into the metal by keeping it at a suitable temperature in the presence of a nitrogen source. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nitride nitriding steel Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language