biphosphate

== English == === Etymology === From bi- +‎ phosphate. === Noun === biphosphate (plural biphosphates) (inorganic chemistry) Any salt of phosphoric acid in which only one of the hydrogen atom has been replaced by a metal ion. (organic chemistry) Synonym of diphosphate. ==== Usage notes ==== Do not confuse a biphosphate with a bisphosphonate, nor a diphosphate with a diphosphonate.