The Boradis system was an inhabited planetary system.

The system was affiliated with the United Federation of Planets in the 24th century, with the first outpost established in 2331 on Boradis III and three others by 2365. Nine other Federation outposts were established in the sector. These thirteen colonies had minimal defenses.

In 2365, the USS Enterprise-D, just outside this system, intercepted a Klingon sleeper ship IKS T'Ong from the late 23rd century and prevent it from attacking the Federation colonies. (TNG: "The Emissary")

This system was only mentioned in dialogue.
According to the script for this episode, the name of this system was pronounced "bo-RAD-iss."
According to Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"), the Boradis system was a binary system with a K-class star and a G-class star. The system was located in the Beta Quadrant.