Interquadratal warp drive was a supposed warp drive system developed by the Borg. Based on the name, it allowed those using the drive to warp through or between quadrants at an exceptional rate.
In 2377, Reginald Barclay claimed that the USS Voyager had interquadratal warp drives, as well as Hirogen hunting sensors and Vidiian phage torpedoes, in an attempt to trick the Ferengi into closing the geodesic fold. (VOY: "Inside Man")
It is unknown if such a device exists or if the term was invented by Barclay on the spot.