氢氧化钙 qīngyǎnghuàgài calcium hydroxide Origin Definitions Defs Strokes Stroke Words Sentences Sents 氢氧化 氫氧化 qīngyǎnghuà hydroxide (bound form) hydroxide; the chemical suffix used to indicate a hydroxide of a specific element钙 鈣 gài noun calcium calcium; silvery-white chemical element with symbol Ca