DIBASIC

Di‐ba″sic (?), a. [[Pref. di- + basic.]] (Chem.) Having two acid hydrogen atoms capable of replacement by basic atoms or radicals, in forming salts; bibasic; — said of acids, as oxalic or sulphuric acids. Cf. Diacid, Bibasic. ☞ In the case of certain acids dibasic and divalent are not synonymous; as, tartaric acid is tetravalent and dibasic, lactic acid is divalent but monobasic.