経度(けいど)

けいど
noun
longitude
1. longitude
The angular distance of a place east or west of the prime meridian, measured in degrees.
東京(とうきょう)は東経(とうけい)139度(ど)に位置(いち)している。
Tokyo is located at 139 degrees east longitude.
GPSで経度(けいど)と緯度(いど)を確認(かくにん)した。
I checked the longitude and latitude with GPS.
経度(けいど)0度(ど)の線(せん)は本初(ほんしょ)子午線と呼(よ)ばれる。
The line at 0 degrees longitude is called the prime meridian.

GEOGRAPHY:

  • 東経(とうけい) (east longitude)
  • 西経(せいけい) (west longitude)
  • 経度(けいど)0度(ど) (0 degrees longitude - prime meridian)
  • 本初(ほんしょ)子午線 (prime meridian - Greenwich)

PAIR WORD:

  • 緯度(いど) (latitude)

EXPRESSIONS:

  • 経度(けいど)と緯度(いど) (longitude and latitude)
  • 経緯(けいい) (longitude and latitude - abbreviated form; also means 'circumstances')

HISTORY: The measurement of longitude was a significant challenge in navigation history. Japan adopted the international standard with the prime meridian at Greenwich in 1886.

NOTE: Japan spans from approximately 122°E to 154°E longitude.

Related Words

Pair verb: 緯度(いど) (latitude)
general
Added 2026.1.13 19:53 · Revised 2026.2.4 10:50
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