American Heritage® Dictionary of the English Language, Fourth Edition
- A trademark used for an abrasive of silicon carbide crystals.
Century Dictionary and Cyclopedia
- n. Silicon carbide, SiC, a product of the electric furnace used as an abrasive material. The reaction of the furnace is SiO2+3C = SiC+2CO. This substance is manufactured in powerful electric furnaces upon a large scale. It is used as a powder of various degrees of fineness and is also consolidated into blocks for grinding-wheels. Carborundum is substituted for ferrosilicon in steel-making and is mixed with a strong solution of water-glass (sodium silicate) to form a paste for application to the lining of a furnace, protecting it from injury by very high temperature. It has been identified in the meteoric iron of Cañon Diablo, Arizona, and named moissanite.
GNU Webster's 1913
- A beautiful crystalline compound,
silicon carbide(SiC), consisting of carbon and silicon in combination; -- also called carbon silicide. It is made by heating carbon and sand together in an electric furnace. The commercial article is dark-colored and iridescent. It is harder than emery, and is used as an abrasive.
- n. an abrasive composed of silicon carbide crystals
- Blend of carbon and corundum (Wiktionary)
“It is named for Edward Acheson, a U.S. inventor best known for the invention of the highly effective abrasive material Carborundum.”
“His father was the president of the Carborundum Corporation, and the family was prosperous and socially prominent in the community.”
“He was incessantly acquisitive, and by the early twentieth century, Mellon had interests not only in coal, steel, and railroads but also in the new industries of aluminum (he owned Alcoa), chemicals (he owned Koppers and Carborundum), and petroleum (he owned Gulf Oil).”
“UNIDENTIFIED MALE: I always thought when I was in the service, we had an expression, was "Illegitimus non Carborundum.”
“A pair of very slender pincers with tips of either Carborundum or titanium stainless steel.”
“Carborundum, being harder and sharper than emery, has replaced it very largely.”
“Carborundum is harder than any gem material but diamond.”
“Carborundum is used as an abrasive, that is, as a material for grinding and polishing very hard substances.”
“Carborundum is another product of the electric furnace.”
“Carborundum can be obtained in two forms -- in the form of "crystals" and of powder.”
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