time machine

noun
|Updated on: 3 Aug 2018

Definition of time machine

: a hypothetical device that permits travel into the past and future

Recent Examples of time machine from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'time machine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of time machine

1895

in the meaning defined above

See Words from the same year
NEW! Time Traveler

TIME MACHINE Defined for English Language Learners

time machine

Definition of time machine for English Language Learners

  • in stories : a machine that allows people to travel to a time in the past or future


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