from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Having two hydrogen atoms that can be replaced by negative atoms or radicals to form salts.
from the GNU version of the Collaborative International Dictionary of English
- adj. Having two hydrogen atoms which can be replaced by negative atoms or radicals to form salts; -- said of bases. See diacid.
from The Century Dictionary and Cyclopedia
- In chem., capable of combining with an acid in two different proportions: said of a base.
bi- + acid (Wiktionary)