English Dictionary

antimeridian

noun

(geography) The reference line at 180° longitude, on the opposite side of earth to the prime meridian. / (geography) A meridian of longitude opposite to any given meridian used as a point of reference.

The antimeridian is the reference line at 180° longitude.

意味（1）

(geography) The reference line at 180° longitude, on the opposite side of earth to the prime meridian.

On the opposite side of the Earth from Greenwich is the antimeridian, a line of longitude that is 180° both east and west of the prime meridian. It cuts through parts of eastern Russia, the Fiji Islands and the middle of the Pacific Ocean.

意味（2）

(geography) A meridian of longitude opposite to any given meridian used as a point of reference.

123° west is the antimeridian of the 57° east meridian.