Meaning & use
Antimeridian
Last updated
The meridian of longitude located 180 degrees from the prime meridian, forming a great circle with it and closely tracking the International Date Line.
See it in a sentence
Crossing the antimeridian in the Pacific means adjusting your calendar by a full day.
Cartographers must handle the antimeridian carefully so maps don't appear to split landmasses in two.
A note on using this word
The antimeridian runs mostly through open ocean, which is why the International Date Line zigzags around it to avoid splitting island nations or countries.
Words with an opposite meaning
prime meridian
Make it your own
Write a sentence using “Antimeridian”, then compare your use with the examples above.
Your draft stays on this page and is not sent anywhere.