1) French word used in English 2) Great circle 3) Located in the south 4) Of or relating to a meridian 
• (a.) Of or pertaining to the meridian. • (a.) Having a southern aspect; southern; southerly.
Refers to motion or distance along lines of longitude. See also zonal. 
Relating to a meridian. ... (05 Mar 2000) ... 
Me·rid'i·o·nal adjective [ French méridional , Latin meridionalis , from meridies midday. See Meridian .] 1. Of or pertaining to the meridian. 2. Having a southern aspect; southern; southerly. « Offices that require heat . . . should be merid...
Type: Term Pronunciation: mĕ-rid′ē-ŏ-năl Definitions: 1. Relating to a meridian.
Movement of wind or ocean waters in a direction that is roughly perpendicular to the lines of latitude.
archaic or obsolete terms > General: Of south
meridional Pertaining to or characteristic of noonday.