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hardening: Meaning and Definition of

hard•en•ing

Pronunciation: (här'dn-ing), [key]
— n.
  1. a material that hardens another, as an alloy added to iron to make steel.
  2. the process of becoming hard or rigid.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
hardener hard-favored
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