meridian

/məˈrɪdiən/
adjective
  1. Relating to the highest point or peak, especially of the sun or of success.
    • The meridian sun was so hot that everyone sought shade.
    • He felt a meridian sense of achievement after winning the award.
    • The garden looked beautiful in the meridian light of midday.
noun
  1. An imaginary line on the Earth's surface that runs from the North Pole to the South Pole, used to measure longitude.
    • The prime meridian passes through Greenwich, England.
    • Navigators use the meridian to calculate their position at sea.
    • Each meridian is numbered to show degrees of longitude east or west.
  2. The highest point or peak of something, such as success, power, or the sun's position in the sky.
    • Her popularity was at its meridian during the 1990s.
    • The sun reaches its meridian at noon, directly overhead.
    • At the meridian of his career, he was the most famous actor in the world.
  3. In traditional Chinese medicine, a pathway in the body through which energy (qi) flows.
    • The practitioner explained how blocked meridians can cause illness.
    • Massage therapy often targets the meridians to improve energy flow.
    • Acupuncture works by stimulating specific points along the body's meridians.
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