corundum
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Corundum
English
Etymology
From Tamil குருந்தம் (kuruntam, “ruby, sapphire”) First attested in the early 18th century.
Pronunciation
Noun
corundum (countable and uncountable, plural corundums)
- (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
Translations
mineral
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Further reading
- David Barthelmy (1997–2024) “Corundum”, in Webmineral Mineralogy Database.
- “corundum”, in Mindat.org, Hudson Institute of Mineralogy, 2000–2024.