D defs.my
Entry 1 sense Webster, 1913

Tribasic

· Tri·ba·sic · IPA
01 a. Capable of neutralizing three molecules of a monacid base, or their equivalent; having three hydrogen atoms capable of replacement by basic…
  1. 1.
    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.(Chem.)