meridional

located in the south, southern; later especially, often pertaining to the southern parts of Europe.

Offices that require heat […] should be meridional.

For much of the 19th century what we now know as South America was called Meridional America

of or characteristic of southern areas or people, especially those in the southern parts of Europe

This, Constance recognised, may have had nothing to do with the situation – it was probably just a meridional convention – for in the Mediterranean countries nobody trusts his neighbour [...].

As soon as he heard the news of the trial and execution, he summed up the incident as a monument to Catholic intolerance, meridional superstition and judicial bigotry – and he decided to do something about it.

along a north–south direction, or relative to a meridian; or relating to meridians or a meridian

an inhabitant of a southern region, especially the south of France