Definition of 'hardening'

See also: harden 

Noun

1. abnormal hardening or thickening of tissue
2. the process of becoming hard or solid by cooling or drying or crystallization; "the hardening of concrete"; "he tested the set of the glue"
      Synonyms: solidifying solidification set curing
3. the act of making something harder (firmer or tighter or more compact)

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