Definitions for nautical mile

This page provides all possible meanings and translations of the word nautical mile

Random House Webster's College Dictionary

nau′tical mile′(n.)

  1. Category: Navy

    Ref: international nautical mile.

  2. a unit of distance, equal to 6080.20 feet (1853.25 m), formerly used in the U.S. for navigation.

    Category: Navy

Origin of nautical mile:

1625–35

Princeton's WordNet

  1. nautical mile, naut mi, mile, mi, geographical mile, Admiralty mile(noun)

    a former British unit of length equivalent to 6,080 feet (1,853.184 meters); 800 feet longer than a statute mile

  2. nautical mile, mile, mi, naut mi, knot, international nautical mile, air mile(noun)

    a unit of length used in navigation; exactly 1,852 meters; historically based on the distance spanned by one minute of arc in latitude

Wiktionary

  1. nautical mile(Noun)

    A unit of length corresponding approximately to one minute of arc of latitude along any meridian. By international agreement it is exactly 1,852 metres (approximately 6,076 feet).

Freebase

  1. Nautical mile

    The nautical mile is a unit of length that is about one minute of arc of latitude measured along any meridian, or about one minute of arc of longitude at the equator. By international agreement it has been set at 1,852 metres exactly. It is a non-SI unit used especially by navigators in the shipping and aviation industries, and also in polar exploration. It is commonly used in international law and treaties, especially regarding the limits of territorial waters. It developed from the sea mile and the related geographical mile. The nautical mile remains in use by sea and air navigators worldwide because of its convenience when working with charts. Most nautical charts use the Mercator projection whose scale varies by about a factor of six from the equator to 80° latitude, so charts covering large areas cannot use a single linear scale. The nautical mile is nearly equal to a minute of latitude on a chart, so a distance measured with a chart divider can be roughly converted to nautical miles using the chart's latitude scale.

Dictionary of Military and Associated Terms

  1. nautical mile

    A measure of distance equal to one minute of arc on the Earth

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