| biacid | <chemistry> Having two hydrogen atoms which can be replaced by negative atoms or radicals to form salts; said of bases. See Diacid. Origin: Pref. Bi- + acid. Source: Websters Dictionary (01 Mar 1998) |
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| biacuminate | <botany> Having points in two directions. Origin: Pref. Bi- + acuminate. Source: Websters Dictionary (01 Mar 1998) |