corundum

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun very hard mineral used as an abrasive

Etymology

From Tamil குருந்தம் (kuruntam, “ruby, sapphire”) First attested in the early 18th century.

In classic literature

Synonyms

corundom

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