prime meridian

English

Noun

prime meridian (plural prime meridians)

  1. The reference line at 0° longitude, passing through Greenwich, England, from which longitude east and west is measured.
    Synonyms: Greenwich meridian, zero meridian
    Coordinate term: antimeridian
    • 2017, Charles W. J. Withers, Zero Degrees: Geographies of the Prime Meridian, Harvard University Press, →ISBN, page 183:
      Other prime meridians were presented as candidates for the world's baseline: Jerusalem; Ferro; Kamchatka; the mid-Atlantic; the Bering Strait; and Greenwich's antimeridian.

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