orthoboric acid

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun inorganic chemistry Any of several poorly-characterized acids that are hydrates of boric oxide

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a white or colorless slightly acid solid that is soluble in water and ethanol; used in the manufacture of glass and paper and adhesives and in detergents and as a flux in welding; also used as an antiseptic and food preservative