Calcium-carbide meaning

A grayish-black crystalline compound, CaC2 , obtained by heating pulverized limestone or quicklime with carbon and used to generate acetylene gas, as a dehydrating agent, and in the manufacture of graphite and hydrogen.
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A dark-gray, crystalline compound, CaC2, used to produce acetylene and calcium cyanamide.
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(inorganic chemistry) A black, solid, of formula CaC2, manufactured from lime and carbon at high temperatures; reacts with water to form acetylene.
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