the insoluble nonacid calcium salt of orthophosphoric acid (phosphoric(V) acid): it occurs in bones and is the main constituent of bone ash. Formula: Ca3(PO4)2
2.
any calcium salt of a phosphoric acid. Calcium phosphates are found in many rocks and used esp in fertilizers
calcium phosphate in American English
any of a number of phosphates of calcium found in bones, teeth, etc. and used in medicine and in the manufacture of enamels, glass, cleaning agents, etc.