The act of moving toward the east or the eastward component of a ship's movement during navigation.
From 'easter' (one who goes east, or an eastward movement) plus '-ing' suffix. Used primarily in nautical contexts since the 17th century.
Sailors tracked latitude and longitude separately on voyages—'easting' and 'northing' were the fundamental components of every navigation calculation, making these technical terms central to Age of Exploration navigation.
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