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boron carbide

noun, Chemistry
1.
a black, crystalline, extremely hard, water-insoluble solid, B 4 C, used chiefly as a moderator in nuclear reactors, as an abrasive, and as a refractory.
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British Dictionary definitions for boron-carbide

boron carbide

noun
1.
a black extremely hard inert substance having a high capture cross section for thermal neutrons. It is used as an abrasive and refractory and in control rods in nuclear reactors. Formula: B4C
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Encyclopedia Article for boron-carbide

boron carbide

(B4C), crystalline compound of boron and carbon. It is an extremely hard, synthetically produced material that is used in abrasive and wear-resistant products, in lightweight composite materials, and in control rods for nuclear power generation

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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