corundum corundum  /kə ˈrən dəm/

Definition(s):

  • (n) very hard mineral used as an abrasive

Usage(s):

  1. Dov Gruner, 33, a Jew with a bullet-crushed jaw and the corundum-hard eyes of an Irgun Zvai Leumi triggerman, stood before a Jerusalem Military Court.
  2. Founded in 1902 to mine corundum for use in abrasive wheels, 3M struggled into the manufacture of sandpaper and then into masking tape.

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