Definition of CORUNDUM

corundum

Plural: corundums

Noun

  • An extremely hard mineral, an aluminum oxide.
  • very hard mineral used as an abrasive
  • 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.

Examples

  • The word CORUNDUM was a solid, unchallengeable play, hard as the mineral itself.

Origin / Etymology

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

Synonyms

corundom

Scrabble Score: 13

corundum: valid Scrabble (US) TWL Word
corundum: valid Scrabble Word in Merriam-Webster MW Dictionary
corundum: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 18

corundum: valid Words With Friends Word