American Heritage® Dictionary of the English Language, Fourth Edition
- n. 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.
- n. inorganic chemistry A black, solid, of formula CaC2, manufactured from lime and carbon at high temperatures; reacts with water to form acetylene.
- n. a grey salt of calcium (CaC) used in making acetylene
“The Original Seven astronauts learned much of their celestial navigation at the domed Morehead Planetarium, built in 1949 on the campus of the University of North Carolina at Chapel Hill by alumnus John Motley Morehead III the inventor of a new process for manufacturing calcium carbide and a founder of Union Carbide.”
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