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Rarecorundum
The correct spelling is corundum.
How to pronounce corundum
noun
IPA: /kəˈɹʌn.dəm/
Say it like: Cor-und-um
The correct spelling is corundum. 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.
Usage Examples
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Definition
noun
- 1.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.
Similar words
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