Interspatial Flexure
From Star Trek : Freedom's Wiki
An interspatial flexure is one of several tunneling phenomena that can be classified as wormholes.
A spatial flexure, or more precisely an intermittent cyclical vortex, exists inside the territory of the Devore Imperium. It was frequently used by telepaths fleeing persecution by the Devore, including a group of Brenari refugees rescued by the USS Voyager in 2375. (VOY: "Counterpoint")