熱ねつ硬こう化かMeaningsNounSuru verb1. thermosettingKanji used熱heat硬hard like a rock化transformationComposed of熱ねつheat; fever; temperature; zeal; passion; enthusiasm; mania; craze; rageNoun硬こう化かhardening; vulcanization; vulcanisation; sclerosis; curing; hardening (of attitude, stance, etc.); stiffening; toughening; upturn (in the market); firming upNoun