Cyclic wormhole
A cyclic wormhole was a type of wormhole mentioned in The Voyager Encounter holoprogram, a Kyrian historical simulation known for its inaccuracies.

In the simulation, Daleth tried to get Captain Kathryn Janeway's cooperation by claiming to know the location of a cyclic wormhole just five days away, which he also knew how to stabilize. ()

See also
Intermittent cyclical vortex

Wormholes