cit·rate I. \ˈsi.ˌtrāt, ˈsī.ˌtrāt, ˈsi.trə̇t\noun (-s) Etymology: International Scientific Vocabulary citr- + -ate : a salt or ester of citric acid II. \-.ˌtrāt\transitive verb (-ed/-ing/-s) : to treat with a citrate especially of sodium or potassium < to citrate blood to prevent coagulation >