The Collaborative International Dictionary
Meridional parts
Meridional \Me*rid"i*o*nal\, a. [F. m['e]ridional, L. meridionalis, fr. meridies midday. See Meridian.]
Of or pertaining to the meridian.
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Having a southern aspect; southern; southerly.
Offices that require heat . . . should be meridional.
--Sir H. Wotton.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.