geographical mile
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English
Alternative forms
Noun
geographical mile (plural geographical miles)
- A unit of length corresponding to exactly one minute of arc (1/60 degree) along the Earth's equator, about 1855.4 meters, 2029.1 yards, or roughly 8/7 miles.
- 1700 February 27, Isaac Newton, letter:
- A geographical mile I call ye sixtith part of a degree of a great circle upon the earth & these miles upon ye body of the Moon in her mean distance from us answer to seconds.
- The equator is exactly 21,600 geographical miles long, about 40,075 km or 24,901 miles.
- 1700 February 27, Isaac Newton, letter:
- (now inexact) Synonym of nautical mile, exactly 1,852 meters.
References
- “geographical mile, n.”, in OED Online
, Oxford: Oxford University Press, launched 2000.
