meridian

子午線

地球の両極を通り、東西の位置を測るための仮想の円。

やさしい英語で： An imaginary circle around Earth that passes through both poles, used to measure positions east or west.

• The prime meridian passes through Greenwich.
• Every meridian runs through both poles.
• The map shows several meridians at equal intervals.

よく使う表現： prime meridian, Greenwich meridian, meridian line

南中点

太陽や星が空で最も高くなる位置。

やさしい英語で： The point in the sky where the sun or a star reaches its highest position.

• The sun reached the meridian.
• The star was at the meridian when we measured its height.
• They waited for the bright star to reach the meridian.

よく使う表現： reach the meridian, at the meridian

絶頂、最盛期

成功や美しさ、力が最も高まる時期。

やさしい英語で： The stage when something reaches its greatest success, beauty, or power.

• The empire reached its meridian under her rule.
• His career was at its meridian.
• The novel captures a civilization at the meridian of its glory.

類義語： peak, zenith, culmination

よく使う表現： meridian of glory, reach its meridian

人生の最盛期

人生の中ほどで、体力や能力が最も充実している時期。

やさしい英語で： The middle part of life, when a person is strongest or most capable.

• She was in the meridian of life.
• He reached the meridian of his life in good health.
• Even at her meridian, she continued learning new skills.

使い方： the meridian of life (He was still in the meridian of life.)

類義語： prime

よく使う表現： meridian of life, in his meridian