Noun hardening has 3 senses
  1. hardening - abnormal hardening or thickening of tissue
    --1 is a kind of
    symptom
    --1 has particulars: callosity, callus; calcification
  2. hardening, solidifying, solidification, set, curing - the process of becoming hard or solid by cooling or drying or crystallization; "the hardening of concrete"; "he tested the set of the glue"
    --2 is a kind of natural process, natural action, action, activity
    --2 is a part of plastination
    --2 has particulars: congealment, congelation
    Derived form: verb harden1
  3. hardening - the act of making something harder (firmer or tighter or more compact)
    --3 is a kind of
    change of integrity
    --3 has particulars: annealing, tempering
    Derived form: verb harden2
,Verb harden has 5 senses
  1. harden, indurate - become hard or harder; "The wax hardened"
    --1 is one way to change
    Antonyms: soften
    Derived form: noun hardening2
    Sample sentences:
    Something ----s
    Somebody ----s
  2. harden, indurate - make hard or harder; "The cold hardened the butter"
    --2 is one way to change
    Antonyms: soften
    Derived form: noun hardening3
    Sample sentences:
    Somebody ----s something
    Something ----s somebody
    Something ----s something
  3. temper, harden - harden by reheating and cooling in oil; "temper steel"
    --3 is one way to modify
    Sample sentence:
    Somebody ----s something
  4. season, harden - make fit; "This trip will season even the hardiest traveller"
    --4 is one way to toughen
    Sample sentence:
    Something ----s somebody
  5. inure, harden, indurate - cause to accept or become hardened to; habituate; "He was inured to the cold"
    --5 is one way to habituate, accustom
    Sample sentences:
    Somebody ----s somebody
    Somebody ----s somebody PP
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