pentacid
Pen*tac"id ( Etym: [Penta- + acid.] (Chem.) Defn: Capable of neutralizing, or combining with, five molecules of a monobasic acid; having five hydrogen atoms capable of substitution by acid residues; -- said of certain complex bases.
Pen*tac"id ( Etym: [Penta- + acid.] (Chem.) Defn: Capable of neutralizing, or combining with, five molecules of a monobasic acid; having five hydrogen atoms capable of substitution by acid residues; -- said of certain complex bases.