[doo-ral-yuh-min, dyoo-]
  1. an alloy of aluminum that is 4 percent copper and contains small amounts of magnesium, manganese, iron, and silicon: used for applications requiring lightness and strength, as in airplane construction.

Origin of duralumin

1905–10; < Latin dūr(us) hard + alumin(um)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for duralumin

Historical Examples of duralumin

  • The duralumin factory is capable of meeting all Zeppelin requirements.


    Harry Vissering

  • The latest German airplane, the "Junker," was made entirely of duralumin.

    Creative Chemistry

    Edwin E. Slosson

  • Are their motors made with sheet steel cylinders or with duralumin engine blocks?

    The Great Drought

    Sterner St. Paul Meek

  • They were through, penetrating solid crystal, masonry, steel and duralumin girders.

  • But duralumin, probably, a very light, strong alloy; and what I have here is a hunting knife with a can-opener on one end!

British Dictionary definitions for duralumin


  1. trademark a light strong aluminium alloy containing 3.5–4.5 per cent of copper with small quantities of silicon, magnesium, and manganese; used in aircraft manufacture
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012