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Webster 1828 Edition

Corundum

CORUNDUM

,
Noun.
The corindon-harmophane of nauy, corindon adamantin of Brongniart, the korund of Werner, and the adamantine spar of Kirwan. It is octahedral, rhomboidal or prismatic.

Definition 2024

corundum

corundum

English

Corundum

Noun

corundum ‎(countable and uncountable, plural corundums)

  1. (mineralogy) 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.

Translations

Etymology

From Tamil குருந்தம் ‎(kuruntam, “ruby”).

Pronunciation

  • (UK, US) IPA(key): /kəˈrʌn.dəm/

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