mass noun
1- a white compound which occurs as a mineral in some alkaline salt deposits and is used in making glass and ceramics, as a metallurgical flux, and as an antiseptic硼砂, 月石。
1.1
- A hydrated sodium borate; chem. formula: Na2B4O7 ·10H2O.四硼酸钠, 化学分子式:Na2B4O7·10H2O.
词源
late Middle English: from medieval Latin, from Arabic būrak, from Pahlavi būrak.