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Related to Meridional parts: meridional difference
|parts of the meridian in Mercator's projection, corresponding to each minute of latitude from the equator up to 70 or 80 degrees; tabulated numbers representing these parts used in projecting charts, and in solving cases in Mercator's sailing.|
See also: Meridional
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.