cytosine /'saitәsi:n/ 📖 中文释义 [化] 胞嘧啶[医] 胞嘧啶 📘 English Definition(英文释义) n. a base found in DNA and RNA and derived from pyrimidine; pairs with guanine ← cytosiderin C 字母词表 cytosine (Cyt) →