Definition of alundum in English:

alundum

noun

  • A trademark for: a hard, heat-resistant material produced by fusing alumina in an electric furnace, used chiefly as an abrasive agent.

Origin

Early 20th century; earliest use found in Machinery (New York). Blend of alumina and corundum.

Pronunciation

alundum

/əˈlʌndəm/