西(せいけい)

せいけい
noun
west longitude
geographyscience
1. west longitude
The angular distance west of the prime meridian (Greenwich), used to specify locations on the earth's surface.
ニューヨーク西経(せいけい)(やく)74()ある
New York is at approximately 74 degrees west longitude.
西経(せいけい)180()日付変更線(ひづけへんこうせん)あたる。
180 degrees west longitude corresponds to the International Date Line.
Most of the South American continent is located between 35 and 80 degrees west longitude.

A geography term composed of 西(にし) (west) and (けい) (longitude). Abbreviation: W. The counterpart is 東経(とうけい) (east longitude). Together with latitude (緯度(いど)), longitude coordinates specify exact positions on the globe.

Common collocations

  • 西経(せいけい)() — 〜 degrees west longitude
  • 北緯(ほくい)()西経(せいけい)() — latitude 〜° N, longitude 〜° W

Related words

  • 東経(とうけい) — east longitude
  • 経度(けいど) — longitude (the measurement itself)
  • 本初子午線(ほんしょしごせん) — prime meridian (0° longitude, through Greenwich)