barbituric acid 📖 中文释义 [化] 巴比土酸[医] 巴比土酸 📘 English Definition(英文释义) A white, crystalline substance, CH2(CO.NH)2.CO,derived from alloxantin, also from malonic acid and urea, and regardedas a substituted urea. ← barbiturates B 字母词表 barbiturism →