An exotic particle associated with the Bajoran wormhole and usable as a weapon against starship systems, featured in The Next Generation, Deep Space Nine and Enterprise.
Verterons are subatomic particles with unusual effects on subspace and on warp-driven vessels. Concentrated pulses of them can knock out a ship's engines and other subspace systems.
That use is shown in The Next Generation episode Force of Nature, where two Hekaran scientists seed a corridor of space with devices that emit verteron pulses, disabling passing ships to draw attention to the damage warp drive is doing. Deep Space Nine establishes that the Bajoran wormhole is an artificial structure held together by verteron nodes.
In the Enterprise episodes Demons and Terra Prime, set in 2155, a verteron array on Mars built to steer comets is seized by John Frederick Paxton, who turns it into a weapon and threatens Starfleet Command.