Tribasic

• (a.) 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.
Found on http://thinkexist.com/dictionary/meaning/tribasic/

tribasic

Type: Term Pronunciation: trī-bā′sik Definitions: 1. Having three titratable hydrogen atoms; denoting an acid with a basicity of 3.
Found on http://www.medilexicon.com/medicaldictionary.php?t=93711
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