A chemical compound in which boron is combined with a more electropositive element, commonly used in high-strength ceramics and industrial materials.
From 'boron' plus the standard binary compound suffix '-ide' (also found in 'oxide', 'sulfide', 'chloride'), following IUPAC chemical nomenclature.
Borides are so hard and heat-resistant that they're literally used to make the tips of deep-well drills for oil exploration—they need materials that can grind through rock miles underground without dulling.
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