磷灰石 Traditional form: 磷灰石 Pinyin (reading): línhuīshí Definitions: apatite phosphatic limestone Characters: 磷 - phosphorus 灰 - ashes; dust; lime, mortar 石 - stone, rock, mineral Traditional characters: 磷 - phosphorus 灰 - ashes; dust; lime, mortar 石 - stone, rock, mineral