Dibasic

Dibasic , adjective

[Prefix di- + basic.]

(Chemistry) 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. Compare 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.