'Triacid' definitions:

Definition of 'Triacid'

From: GCIDE

Triacid \Tri*ac"id\, a. [Pref. tri- + acid.] (Chem.) Capable of neutralizing three molecules of a monobasic acid or the equivalent; having three hydrogen atoms which may be acid radicals; -- said of certain bases; thus, glycerin is a triacid base. [1913 Webster]