Trimesitic

Tri`me`sit´ic


a.1.(Chem.) Of, pertaining to, or designating, a tribasic acid, C6H3.(CO2)3, of the aromatic series, obtained, by the oxidation of mesitylene, as a white crystalline substance.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.