Meaning of bi-bivalent

bi-bi•va•lent

Pronunciation: (bī"bī-vā'lunt, bī-biv'u-), [key]
— adj. Chem.
  1. noting an electrolytic compound which splits into two ions, each with a valence of two.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.