noun, takes する, intransitive verb

  1. hardening, vulcanization, vulcanisation, sclerosis, curing.
  2. hardening (of attitude, stance, etc.), stiffening, toughening.
  3. Finance term.upturn (in the market), firming up.

Variations

Pronunciation Kanji Kana Is Common
硬化 こうか

Contained Kanji Breakdown

stiff, hard
かた.い コウ (Late Jr. High, N2)
stone
いし セキ シャク (1st, N3)
left hand, cliff(厂) variant
mouth
くち コウ ク (1st, N4)
grow late, night watch, sit up late
さら コウ ふ.ける (Early Jr. High, N3)
one, one radical (no.1)
イチ いっ ひと- (1st, N5)
day, sun, Japan
ひ ニチ にっ (1st, N5)
mow, cut grass, subdue
ガイ ゲ おさ.める (Kentei 1)
change, take the form of, influence
カ ば.ける ケ (3rd, N3)
human radical (no. 9)
spoon, spoon or katakana hi radical (no. 21)
ヒ さじ (Kentei 1)