bn:00022921n
Noun Concept
Categories: Corundum varieties, Minerals in space group 167, Oxide minerals, Polymorphism (materials science), Articles with short description
EN
corundom  corundum  Artificial corundum  corinvindum  Corrundum
EN
Very hard mineral used as an abrasive WordNet 3.0
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EN
Very hard mineral used as an abrasive WordNet 3.0 & Open English WordNet
Corundum is a crystalline form of aluminium oxide typically containing traces of iron, titanium, vanadium, and chromium. Wikipedia
Oxide mineral Wikidata
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. Wiktionary
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