1. in a direction along or parallel to a meridian; from north to south or south to north
Usage: geography; technical

Examples

• The mountain range extends meridionally across the continent.
• Ocean currents flow meridionally in this region.
• The survey was conducted meridionally from the Arctic to the equator.
• Temperature gradients change meridionally with latitude.
• The birds migrate meridionally along the coastline.
• Wind patterns shift meridionally during seasonal changes.