磷酸钙 Traditional form: 磷酸鈣 Pinyin (reading): línsuāngài Definitions: calcium phosphate (chemistry) Characters: 磷 - phosphorus 酸 - tart, sour; spoiled; acid 钙 - calcium Traditional characters: 磷 - phosphorus 酸 - tart, sour; spoiled; acid 鈣 - calcium