Definition of “the prime meridian” - English Dictionary

british dictionary

“the prime meridian” in British English

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the prime meridiannoun [ S ]

uk /ˌpraɪm məˈrɪd.i.ən/ us /ˌpraɪm məˈrɪd.i.ən/ specialized

the imaginary line from the North Pole to the South Pole that passes through Greenwich in England and markslongitude, from which all other longitudes are measured

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