international orange

international orange (uncountable)

1. A reddish-orange colour used to set things apart from their surroundings, especially in the aerospace industry.
   • 1937, United States Bureau of Air Commerce, Aeronautics Bulletin:

     The width of the chrome-yellow or international orange bands should be one-seventh the height of the structure for all structures less than 250 feet […]

   • 1945, United States Civil Aeronautics Administration, Civil Aeronautics Bulletin:

     This specification covers the general requirements for international orange paint for use on steel, concrete and wood surfaces, such as galvanized steel […]

   • 1993, Robert J. Johnson, C. Daniel Mote, John Zelcer, Skiing Trauma and Safety: Ninth International Symposium:

     Colors such as black lettering on an international orange background are common and are easily visible in most conditions.

• safety orange