* * *
di·ba·sic (')dī-'bā-sik adj
1) having two replaceable hydrogen atoms used of acids
2) containing two atoms of a monovalent metal
* * *
di·ba·sic (di-baґsik) [di- + basic] containing two hydrogen atoms replaceable by bases, and thus yielding two series of salts, as H2SO4.Medical dictionary. 2011.