1. existing, occurring, or carried on between different regions

Examples

• The interregional highway connects the northern and southern parts of the state.
• Interregional trade has increased significantly over the past decade.
• The company established an interregional distribution network.
• Interregional cooperation is essential for managing water resources.
• The conference focused on interregional economic development.
• Interregional migration patterns have shifted due to climate change.