Prime meridian

noun

Definitions

Noun
  1. 1
    The reference line at 0° longitude, passing through Greenwich, England, from which longitude east and west is measured.

    "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."

  2. 2
    meridian at zero degree longitude from which east and west are reckoned (usually the Greenwich longitude in England) wordnet

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