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Noun: nautical mile  no-ti-kul mI(-u)l
  1. A unit of length used in navigation; exactly 1,852 meters; historically based on the distance spanned by one minute of arc in latitude
    "The pilot calculated the flight distance in international nautical miles";
    - mile, mi, naut mi, international nautical mile, air mile
     
  2. A former British unit of length equivalent to 6,080 feet (1,853.184 meters); 800 feet longer than a statute mile
    "Ships calculate their speed in nautical miles per hour";
    - naut mi, mile, mi, geographical mile, Admiralty mile

Derived forms: nautical miles

Type of: nautical linear unit

Encyclopedia: Nautical mile