Meridian (geography), a longitude line, i.e. a line of constant longitude, or in other words an imaginary arc on the Earth's surface from the North Pole to the South Pole

The meaning of MERIDIAN is a great circle on the surface of the earth passing through the poles. How to use meridian in a sentence.

Meridian, imaginary north–south line on the Earth’s surface that connects both geographic poles; it is used to indicate longitude. The 40th meridian, for example, has a longitude of 40° E or 40° …

A great imaginary circle on the surface of the Earth that runs north and south through the North Pole and South Pole. Longitude is measured on meridians: places on a meridian have the …

The prime meridian of longitude is in Greenwich, London. You can also find related words, phrases, and synonyms in the topics: This intersection is an arc of a great circle whose …

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Definition of meridian noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Dec 11, 2025 · meridian (plural meridians) (astronomy) In full celestial meridian: a great circle passing through the poles of the celestial sphere and the zenith for a particular point on the …

A meridian is an imaginary line from the North Pole to the South Pole. Meridians are drawn on maps to help you describe the position of a place.

Of, relating to, or constituting the highest point, as of development or power: the empire in its meridian period.