Meaning of “meridian” in the English Dictionary

british dictionary

"meridian" in British English

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meridiannoun [ C ]

uk /məˈrɪd.i.ən/ us /məˈrɪd.i.ən/

an imaginary line between the North Pole and the South Pole, drawn on maps to help to show the position of a place:

The prime meridian of longitude is in Greenwich, London.

(Definition of “meridian” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"meridian" in American English

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meridiannoun [ C ]

us /məˈrɪd·i·ən/

earth science an imaginary line that passes from the North Pole to the South Pole through any place on the surface of the earth, used to show the position of places on a map

(Definition of “meridian” from the Cambridge Academic Content Dictionary © Cambridge University Press)