硬化 こうか hardening #21,228 Meanings noun, takes する, intransitive hardening; vulcanization; vulcanisation; sclerosis; curing hardening (of attitude, stance, etc.); stiffening; toughening finance upturn (in the market); firming up Its kanji 硬 コウ · かた.い stiff, hard 化 カ、ケ · ば.ける、ば.かす、ふ.ける、け.する change, take the form of, influence, enchant, delude, -ization