非可逆変化 ひかぎゃくへんか Meanings Noun irreversible change See also: 不可逆変化 (ふかぎゃくへんか). Kanji 非 non-. Read as ヒ. 可 possible 逆 reverse. Read as ギャク. 変 change. Read as ヘン. 化 transform. Read as カ. Jinuma: Japanese Dictionary · Word lists