plural of fellow traveler

travel through space in order to visit and explore other worlds

(chiefly science fiction) Hypothetical or fictional travel to the past or the future, typically by means of a machine (a time machine) or a wormhole.

One who engages in time travel.

One who travels together with another. / (US) One who sympathizes with the aims or beliefs of an organization without belonging to it; most often applied to a Communist sympathizer.

A man who travels, often within a certain territory, soliciting orders or selling goods.

(physics) a wave that is not bounded by a given space, but can propagate freely / (physics) a wave in which the vibration is in the direction of propagation; a longitudinal wave

A company that arranges travel and accommodation for travellers.

(Britain, Canada) A preprinted cheque for a fixed amount, often in a foreign currency, issued by a bank that may be used instead of cash; may usually be replaced if lost or stolen.

expenditure incurred by an employee on account of a journey on official business