1. serving as a messenger or intermediary between parties
Usage: formal; diplomatic contexts
2. connecting or linking different parts within a system
Usage: technical; anatomy

Examples

• The ambassador served an internuncial role between the two nations.
• Internuncial neurons connect different parts of the nervous system.
• The diplomat’s internuncial duties required careful negotiation.
• Scientists studied the internuncial pathways in the brain.
• His internuncial position allowed him to facilitate communication.
• The internuncial fibers transmit signals between nerve centers.