nautical-mile

nautical mile

noun
a unit of distance used chiefly in navigation, equal to 6080.20 feet (1853.25 meters) in the U.S., now replaced by the international nautical mile.


Origin:
1625–35

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Collins
World English Dictionary
nautical mile
 
n
1.  international nautical mile, Also called: air mile a unit of length, used esp in navigation, equivalent to the average length of a minute of latitude, and corresponding to a latitude of 45°, i.e. 1852 m (6076.12 ft)
2.  Compare sea mile Former name: geographical mile a former British unit of length equal to 1853.18 m (6080 ft), which was replaced by the international nautical mile in 1970

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
nautical mile   (nô'tĭ-kəl)  Pronunciation Key 
A unit of length in the US Customary System, used in air and sea navigation and equal to 6,076 feet or 2,025 yards (1,852 meters). Also called geographic mile. See Table at measurement.
The American Heritage® Science Dictionary
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