CALCIUM PHOSPHATE

noun Date: 1869 any of various phosphates of calcium: as, the phosphate CaH 4 P 2 O 8 used as a fertilizer and in baking powder, the phosphate CaHPO 4 used in pharmaceutical preparations and animal feeds, the phosphate Ca 3 P 2 O 8 used as a fertilizer, the naturally occurring phosphate Ca 5 (F,Cl,OH, 1/2CO 3 )(PO 4 ) 3 that contains other elements or radicals and is the chief constituent of phosphate rock, bones, and teeth