Fluxing

From the verb 'to flux'. In the Robert Zemekis saga 'Back to the future', inside of the time traveling Delonean is localized the Flux Capacitor, which job is to Flux. So the Delonean needs the Flux Capacitor to keep Fluxing for time travel being possible.

Marty McFly (checking the Delonean before the time travel)(first movie): Flux Capacitor, Fluxing.