Geographical mileとは 意味・読み方・使い方

名詞

geographical mile (plural geographical miles)

1. 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 international miles.

   Alternative form: geographic mile

   Hypernym: mile

   Coordinate terms: land mile; international mile, statute mile (UK), survey mile (US), statute mile (US)

   Near-synonyms: nautical mile, sea mile (very close to the same distance)

   • 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.

2. (now inexact) Synonym of nautical mile, exactly 1,852 meters.

参照

• “geographical mile, n.”, in OED Online ⁠, Oxford: Oxford University Press, launched 2000.