adjective.
Of or relating to salts or acids forming salts with two atoms of a univalent metal. Na2HPO4 is an example of a dibasic salt.
adjective.
Diprotic.
The Century Dictionary and Cyclopedia
Same as bibasic.
the GNU version of the Collaborative International Dictionary of English
adjective.
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.