acidimetry
Ac`id*im"e*try, n. Etym: [L. acidus acid + -metry.] (Chem.) Defn: The measurement of the strength of acids, especially by a chemical process based on the law of chemical combinations, or the fact that, to produce a complete reaction, a certain definite weight of reagent is required. -- Ac`id*i*met"ric*al, a.