| pyroboric | <chemistry> 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. Origin: Pyro- + boric. Source: Websters Dictionary (01 Mar 1998) |
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| pyroboric acid | Perboric or pyroboric acid. Synonym: pyroboric acid. (05 Mar 2000) |