三さん酸さんさんさんMeanings1prefix, noun which may take the genitive case particle 'no'triacidchemistryChemistry prefix meaning a compound having three acidic groups or relating to three acid molecules.三さん酸さん塩えん基きは三みっつの酸さん基きを持もつ化か合ごう物ぶつです。A triacid base is a compound that has three acid groups.