Definition of alumina

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  • alumina is a valid Scrabble US word with a point value of 9
  • alumina is a valid Scrabble UK word with a point value of 9
  • alumina is a valid Words with friends word with a point value of 13

Definition of alumina

  • any of various forms of aluminum oxide occurring naturally as corundum (noun)

    Synonyms

    1. aluminium oxide
    2. aluminum oxide

See definition of alumina in Merriam Webster