Toh-Maire
From Star Trek : Freedom's Wiki
Toh-maire is the Rakhari designation for volatile gas in nebulas in the Gamma Quadrant.
In 2369, Odo and Croden attempted to elude Ro-Kel's ship into a toh-maire nebula. (DS9: "Vortex")
In 2373, the Dominion hid a large invasion fleet in a toh-maire nebula. A runabout from Deep Space 9, piloted by Worf and Elim Garak, discovered the fleet. (DS9: "In Purgatory's Shadow")