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Dictionary definition for: Hardening

1. (n) abnormal hardening or thickening of tissue

2. (n) the process of becoming hard or solid by cooling or drying or crystallization; "the hardening of concrete" "he tested the set of the glue"

3. (n) the act of making something harder (firmer or tighter or more compact)

WordNet 2.1 Copyright Princeton University. All rights reserved.