Last Updated
：2025/12/08
Ferro meridian
Proper noun
historical
Japanese Meaning
歴史的な地理用語で、かつて本初子午線として利用された子午線。現在は経度18.160792°西として定義されている。
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(historical, geography) A meridian formerly used as a prime meridian; now defined as 18.160792° west.
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Ferro meridian
Cartographers in the 18th century often measured longitudes relative to the Ferro meridian.
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Cartographers in the 18th century often measured longitudes relative to the Ferro meridian.
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