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Meaning of nitriding

ni•trid•ing

Pronunciation: (nī'trī-ding), [key]
— n. Metall.
  1. 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.