protoxide /prәu'tɔksaid/ 📖 中文释义 n. [化]低氧化物,初氧化物(亦作protoxid) 📘 English Definition(英文释义) n. That one of a series of oxides having the lowestproportion of oxygen. See Proto-, 2 (b). ← protoxeoid P 字母词表 protoxin →