medullin 腎髓素
me·dul·lin /mɛˈdələn, ˈmɛdḷɪn, ˈmɛʤəlɪn/ 名詞
Me·dul·lin n. Bot. Chem. A variety of lignin or cellulose found in the medulla, or pith, of certain plants. Cf. Lignin, and Cellulose. ◄ ►