diaheliotropism /daɪə'hi:lɪətrɒpɪzəm/ 📖 中文释义 横向趋光性 📘 English Definition(英文释义) n. A tendency of leaves or other organs of plants tohave their dorsal surface faced towards the rays of light. ← diaheliotropic D 字母词表 diakenium →