antimeridian

Definitions

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

Equivalents

Examples

“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.”

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

“The antimeridian contains your nadir and the opposite celestial pole for your hemisphere. The local meridian and the antimeridian together form⟳ the great circle simply called the meridian.”

“Other prime meridians were presented as candidates for the world's baseline: Jersualem; Ferro; Kamchatka; the mid-Atlantic; the Bering Strait; and Greenwich's antimeridian.”

CEFR level