corundum

C3O1R1U1N1D2U1M3
UK, US/kəˈɹʌn.dəm/

noun

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
corundom
OriginTamil குருந்தம் →
UncommonScrabble 13
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Meanings

nouncorundum (countable and uncountable, plural corundums)

plural corundums

  1. countableuncountablechemistryAn 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.

Synonyms & antonyms

nounvery hard mineral used as an abrasive

Similar
corundom
Broader
mineral

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Tamilகுருந்தம்“ruby, sapphire”
  2. Englishcorundum

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

More words from Tamil

Full word history & related roots →

Translations

Arabic سَامُور
  • سَامُور (sāmūr)mineral
Bulgarian корунд
  • корунд (korund)mineral
Catalan corindó
  • corindómineral
Chinese 剛玉 /刚玉
  • 剛玉 /刚玉 (gāngyù)mineral
Czech korund
  • korundmineral
Danish korund
  • korundmineral
Dutch korund
  • korundmineral
Estonian korund
  • korundmineral
Finnish korundi
  • korundimineral
French corindon
  • corindonmineral
German Korund
  • Korundmineral
Greek κορούνδιο
  • κορούνδιο (koroúndio)mineral
Hebrew קורונדום
  • קורונדום (qorundum)mineral
Hindi कुरुविंद, कुरंड
  • कुरुविंद (kuruvind)mineral
  • कुरंड (kuraṇḍ)mineral
  • कुरुल (kurul)mineral
Hungarian korund
  • korundmineral
Indonesian korundum
  • korundummineral
Italian corindone
  • corindonemineral
Japanese コランダム, 鋼玉
  • コランダム (korandamu)mineral
  • 鋼玉 (kōgyoku)mineral
Latvian korunds
  • korundsmineral
Lithuanian korundas
  • korundasmineral
Malay korundum
  • korundummineral
Norwegian korund
  • korundmineral
Persian کرندوم
  • کرندوم (korondum)mineral
Polish korund
  • korundmineral
Portuguese corundo, corindo
  • corundomineral
  • corindomineral
Romanian corindon
  • corindonmineral
Russian кору́нд
  • кору́нд (korúnd)mineral
Spanish corindón
  • corindónmineral
Swedish korund
  • korundmineral
Tamil குருந்தம்
  • குருந்தம் (kuruntam)mineral
Thai กะรุน, คอรันดัม
  • กะรุน (gà-run)mineral
  • คอรันดัม (kɔɔ-ran-dam)mineral
Turkish korindon, korendon
  • korindonmineral
  • korendonmineral
Ukrainian кору́нд
  • кору́нд (korúnd)mineral
Cite this entry
APA

corundum. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/corundum

MLA

“corundum.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/corundum. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “corundum,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/corundum.

Source: corundum on Wiktionary, CC BY-SA 4.0.