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The Collaborative International Dictionary of English v.0.48 (gcide)

Meridional \Me*rid"i*o*nal\, a. [F. m['e]ridional, L.
meridionalis, fr. meridies midday. See {Meridian}.]
[1913 Webster]
1. Of or pertaining to the meridian.
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2. Having a southern aspect; southern; southerly.
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Offices that require heat . . . should be
meridional. --Sir H.
Wotton.
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{Meridional distance}, the distance or departure from the
meridian; the easting or westing.

{Meridional parts}, 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.
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