'Tribasic' definitions:
Definition of 'Tribasic'
From: GCIDE
- Tribasic \Tri*ba"sic\, a. [Pref. tri- + basic.] (Chem.) 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. [1913 Webster]