different between corundum vs carborundum

English

Etymology

From Tamil ????????? (kuruntam, “ruby, sapphire”) [early 18th century].

Pronunciation

• (UK, US) IPA^(key): /k????n.d?m/

Noun

corundum (countable and uncountable, plural corundums)

1. (mineralogy) An extremely hard mineral, a form of aluminum oxide with the chemical formula Al₂O₃, that occurs in the form of the gemstones sapphire and ruby; it is used as an abrasive.

Derived terms

• carborundum

Translations

Further reading

• David Barthelmy (1997–2021) , “Corundum”, in Webmineral Mineralogy Database
• “corundum”, in Mindat.org?^[1], Hudson Institute of Mineralogy, 2000–2021.

English

Etymology

Blend of carbon +? corundum; originally a trade name.

Pronunciation

• IPA^(key): /k??b????nd?m/

Noun

carborundum (uncountable)

1. Crystals of silicon carbide used as an abrasive.
   • 1892, Nikola Tesla, Experiments with Alternate Currents of High Potential and High Frequency, Wildside Press LLC ?ISBN, page 73

     There is no doubt that such a button — properly prepared under great pressure — of carborundum, especially of powder of the best quality, will withstand the effect of the bombardment fully as well as anything we know.

   • 1976, M.R. Walter, Stromatolites, Elsevier ?ISBN, page 28

     This can most readily be done by use of carborundum marking. The procedure involves successive marking of the same mat with layers of carborundum at least twice.

   • 1995, Reg F. Chapman, Gerrit de Boer, Regulatory Mechanisms in Insect Feeding, Springer Science & Business Media ?ISBN, page 22

     At the same times, samples were taken to determine that the carborundum treatment did increase the amount of wear of the mandibles compared with insects on the diet without carborundum powder.

   • 2008, Gerald W. R. Ward, The Grove Encyclopedia of Materials and Techniques in Art, Oxford University Press ?ISBN, page 83

     Print made by combining carborundum—a carbon and silicon compound customarily used for polishing by abrasion—with synthetic resin or varnish (see also Prints, §III, 5).

Translations

Further reading

• David Barthelmy (1997–2021) , “Carborundum”, in Webmineral Mineralogy Database
• “carborundum”, in Mindat.org?^[1], Hudson Institute of Mineralogy, 2000–2021.

French

Noun

carborundum m (plural carborundums)

1. carborundum

Italian

Noun

carborundum m (invariable)

1. Carborundum