Pentacid

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Pentacid \Pen*tac"id\, a. [Penta- + acid.] (Chem.)
     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.
     [1913 Webster]