diphosphoglycerate

[ dahy-fos-foh-glis-uh-reyt ]
/ daɪˌfɒs foʊˈglɪs əˌreɪt /

noun Biochemistry.

an ester of phosphoric acid and glyceric acid that occurs in the blood and that promotes the release of hemoglobin-bound oxygen.

Origin of diphosphoglycerate