meridian /mə-ridˈi-ən/

1. An imaginary great circle through the poles of the earth, the heavens, or any spherical body or figure, or its representation on a map
2. Specif, that cutting the observer's horizon at the north and south points, which the sun crosses at local noon
3. (in Chinese medicine) any of several lines or pathways through the body along which life energy flows
4. Culmination or highest point, as of success, splendour, power, etc
5. Midday
6. A midday dram or nap (Scot)

1. On the meridian
2. Relating to a meridian or the sun or other body on the meridian
3. At culmination or highest point
4. Of or at midday

meridˈional adjective

1. Relating to the meridian
2. In the direction of a meridian
3. Midday
4. Culminating
5. Southern
6. Characteristic of the south

A southerner, esp in France

meridionalˈity noun

meridˈionally adverb

meridian altitude noun

The arc of a meridian between a heavenly body and the horizon

meridian circle noun

A telescope mounted to revolve in the plane of the meridian

meridian passage noun

The transit or passage of a heavenly body across the observer's meridian

magnetic meridian see under magnet

• menstruates
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