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ti·trate / ˈtīˌtrāt/ • v. [tr.] Chem. ascertain the amount of a constituent in (a solution) by measuring the volume of a known concentration of reagent required to complete a reaction with it, typically using an indicator. ∎  Med. continuously measure and adjust the balance of (a physiological function or drug dosage).DERIVATIVES: ti·tra·ta·ble adj.ti·tra·tion / ˌtīˈtrāshən/ n.