alundum
Alumina, especially an abrasive product made from fused aluminaAlumina, especially an abrasive product made from fused alumina
/əˈlʌn.dəm/
Meaning
1 senses(uncountable)Alumina, especially an abrasive product made from fused alumina
a substance made of fused alumina
Origin
Blend of alumina + corundum.Blend of alumina + corundum.
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Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable