氧化钙 Traditional 氧化鈣 yǎng huà gài 🔊 calcium oxide, CaO + Keep this word Meanings yǎng huà gài 氧化鈣 calcium oxide, CaO(slang) (used as a substitute for 肏[cao4], since CaO resembles cào) Its characters 氧yǎngoxygen (chemistry)化huàto make intoHSK 5钙gàicalcium (chemistry)HSK 7–9 Words with 氧化钙 氢氧化钙 qīng yǎng huà gài calcium hydroxide Ca(OH)2; slaked lime