退化 [ㄊㄨㄟˋ ㄏㄨㄚˋ; tui4 hua4] to degenerate atrophy ◄ ►
退化 たいか noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru antonym: 進化 degeneration retrogression ◄ ►