Chrononaut

From Tardis Wiki, the free Doctor Who reference

Chrononaut was a term used for time travellers equivalent to astronaut. Entek was a chrononaut of the Ra'ra'vis. (COMIC: Time Fraud)

Aoris sent chrononauts 1,000 years into the past in order to procure rare animals and zenox crystals from the Age of Greed. (AUDIO: The Paradox Planet / Legacy of Death)

The Monstrons were a species of chrononauts. (AUDIO: The Iris Wildthyme Appreciation Society)