me·rid·i·o·nal 
(mə-rĭdē-ə-nəl)
(mə-rĭdē-ə-nəl)adj.
1. Of or relating to meridians or a meridian.
2. Located in the south; southern.
3. Of or characteristic of southern areas or people.
n.
An inhabitant of a southern region, especially the south of France.
[Middle English, pertaining to the sun's position at noon, from Old French meridionel, southern, from Late Latin merīdiōnālis, from Latin merīdiānus, of midday, southern; see MERIDIAN.]