CEFR B2

meridian

Translation

子午線 / 経線 / 頂点

An imaginary line connecting the North and South Poles, passing through a given location on Earth's surface; a line of longitude.

The prime meridian is the line of 0 degrees longitude.
本初子午線は経度0度の線です。
Cartographers use meridians to divide the globe into sections.
地図製作者は経線を使って地球を区分します。

カタカナ: メリディアン

IPA: /məˈrɪdiən/

An imaginary line connecting the North and South Poles, passing through a given location on Earth's surface; a line of longitude.

意味: 地球の北極と南極を結ぶ仮想の線で、地表の特定の地点を通るもの。経線とも呼ばれます。

The prime meridian is the line of 0 degrees longitude. — 本初子午線は経度0度の線です。
Cartographers use meridians to divide the globe into sections. — 地図製作者は経線を使って地球を区分します。

Japanese translations of Meridian:

meridian of longitude (collocation): A specific line of longitude. — "The city is located on the 74th meridian of longitude west."
crossing the meridian (collocation): Passing over the imaginary line of longitude or the celestial meridian. — "The planet was observed crossing the meridian at precisely 2:00 AM."