硬化剤 こうかざい Meanings Noun hardener; curative agent; stiffening agent Kanji 硬 hard. Read as コウ. 化 transform 剤 agent. Read as ザイ. Words containing 硬化剤 熱硬化剤 (ねつこうかざい) hardener (catalyst in hardening thermosetting materials) Jinuma: Japanese Dictionary · Word lists