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Carborundum

American  
[kahr-buh-ruhn-duhm] / ˌkɑr bəˈrʌn dəm /
Trademark.
  1. a form of manufactured silicon carbide used industrially as an abrasive and refractory.


Carborundum British  
/ ˌkɑːbəˈrʌndəm /

noun

    1. any of various abrasive materials, esp one consisting of silicon carbide

    2. ( as modifier )

      a Carborundum wheel

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Carborundum is silicon carbide, SiC, a very hard material used as an abrasive on sandpaper and in other applications.

From Textbooks ● Feb. 14, 2019

Curtiss-Wright said its nominees "believe that Kennecott management, instead of paying $567 million to buy Carborundum Co., should have used that cash directly for the benefit of Kennecott stockholders."

From Time Magazine Archive

It was also a notable coup for the patrician Mellon family of Pittsburgh, which has for decades owned a large block of Carborundum stock.

From Time Magazine Archive

Curtiss-Wright is openly declaring its intention to make Kennecott sell off Carborundum, an abrasives manufacturer that Kennecott acquired only three months ago for $571 million.

From Time Magazine Archive

Carborundum paper, made like emery paper, is now largely used in place of garnet paper in American shoe factories, and finds a market in other directions.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" by Various

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