Definition of "supranational"

The Systems Alliance is an independent supranational government representing the interests of humanity as a whole. The Alliance is responsible for the governance and defense of all extra-solar colonies and stations. […]

2008, BioWare, Mass Effect, Redwood City: Electronic Arts, PC, scene: Systems Alliance Codex entry

If its Middle-earth series becomes must-see TV around the world, it would mean millions of new devoted subscribers in the Amazon Prime fellowship, collectively paying billions of dollars, lured by a fleet of dwarves, elves, and hobbits that would, one might say, rule their shopping behaviors and bind them to one supranational force.

2017 November 13, Derek Thompson, “Why Amazon Thinks You Want to Watch a ‘Lord of the Rings’ TV Show (or Five)”, in The Atlantic‎

This segment of issuers is known as the supranationals, or supras. Together with regional and agency borrowers, the bonds issued by supranationals form a bond market segment known as SSA (supras, sub-sovereigns and agencies).

2021, Alexander During, Fixed Income Trading and Risk Management: The Complete Guide, John Wiley & Sons, page 147