1. A trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
   - B, atomic number 5

Derived forms: borons

See also: boric, boronic

Type of: chemical element, element

Part of: borax, kernite

Encyclopedia: Boron, CA Boron Boron, California Boron, Territoire de Belfort Boron, Territoire-de-Belfort

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