Time-travel meaning

Time travel is a science fiction concept in which people are able to move backwards into the past or forwards into the future.

An example of time travel is when a person in the year 2011 goes back to the year 1900.

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A journeying into the past or the future, as in science fiction.
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Hypothetical or fictional travel at will to the past or the future, typically by means of a machine (a time machine) or a wormhole.
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Alternative spelling of time travel.
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Origin of time-travel