Verteron node

A verteron node was an amalgamation of verterons within the Bajoran wormhole.

In 2370, Jadzia Dax and Arjin piloted the USS Rio Grande (NCC-72452) around verteron nodes while moving a proto-universe to the Gamma Quadrant. 

When the wormhole was temporarily disrupted by the Cardassians, the verteron nodes in the wormhole became distended and a threat to ships passing through.