1. [ noun ] the process of becoming hard or solid by cooling or drying or crystallization
Synonyms: solidification set curing solidifying

"the hardening of concrete" "he tested the set of the glue"

Related terms: natural_process congealment plastination harden solidify solidify
2. [ noun ] (medicine) abnormal hardening or thickening of tissue
Related terms: symptom calcification callosity
3. [ noun ] the act of making something harder (firmer or tighter or more compact)
Related terms: change_of_integrity annealing harden
Similar spelling:   harden