Tribasic
Pronunciation : Tri*ba"sic
Part of Speech : a.
Etymology : [Pref. tri- + basic.] (Chem.)
Definition : Defn: Capable of neutralizing three molecules of a monacid base, or their equivalent; having three hydrogen atoms capable of replacement by basic elements on radicals; -- said of certain acids; thus, citric acid is a tribasic acid.
Source : Webster's Unabridged Dictionary, 1913