氢氧化钙 Traditional form: 氫氧化鈣 Pinyin (reading): qīngyǎnghuàgài Definitions: calcium hydroxide Ca(OH)2 slaked lime Characters: 氢 - ammonia 氧 - oxygen 化 - to change, to convert, to reform; -ize 钙 - calcium Traditional characters: 氫 - ammonia 氧 - oxygen 化 - to change, to convert, to reform; -ize 鈣 - calcium