01 a. Of or pertaining to the meridian.
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1.
Of or pertaining to the meridian.
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2.
Having a southern aspect; southern; southerly.“Offices that require heat . . . should be meridional.” — Sir H. Wotton.
Phrases & compounds
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.