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pyroboric |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Pyroboric \Pyr`o*bo"ric\, a. [Pyro- + boric.] (Chem.) Pertaining to derived from or designating, an acid, {H2B4O7} (called also {tetraboric} acid), which is the acid ingredient of ordinary borax, and is obtained by heating boric acid.