noun, noun or participle which takes 'suru', intransitive verb
hardening; stiffening; solidifying
Physical hardening of materials, including chemical processes like vulcanization and curing, and medical conditions like sclerosis.
Antonyms: 軟化
ゴムを加熱すると硬化する。
Rubber hardens when heated.
動脈硬化は生活習慣病の一つだ。
Arteriosclerosis is one of the lifestyle-related diseases.
noun, noun or participle which takes 'suru', intransitive verb
hardening (of attitude); stiffening; toughening
Figurative use: attitudes, stances, or policies becoming more rigid or uncompromising.
Antonyms: 軟化
交渉が難航し、双方の態度が硬化した。
Negotiations stalled and both sides' attitudes hardened.
noun, noun or participle which takes 'suru', intransitive verb
upturn (in the market); firming up
Finance: market prices or conditions becoming firmer or showing an upward trend.
Antonyms: 軟化
原油価格が底を打ち、相場が硬化し始めた。
Crude oil prices bottomed out and the market began to firm up.