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Noun: naut mi
  1. A former British unit of length equivalent to 6,080 feet (1,853.184 meters); 800 feet longer than a statute mile
    - nautical mile, mile, mi, geographical mile, Admiralty mile
     
  2. A unit of length used in navigation; exactly 1,852 meters; historically based on the distance spanned by one minute of arc in latitude
    - nautical mile, mile, mi, knot, international nautical mile, air mile

Type of: nautical linear unit