time machine

noun

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

Examples of time machine in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
These are unknowable and can be answered only by someone with a time machine. Mike Isaac, New York Times, 14 Apr. 2025 Reproductive technology may assume the chrome-and-glass form of an existential time machine, zipping frictionlessly into the future to retrieve high-definition images of a premium-grade child. Jessica Winter, New Yorker, 21 Apr. 2025 Try going back in time and destroying your time machine. Paul Sutter, Space.com, 25 Jan. 2025 For him, watching the teams play felt like stepping into a time machine. Mohamed Sheikh Nor, Christian Science Monitor, 15 Apr. 2025 See All Example Sentences for time machine

Word History

First Known Use

1894, in the meaning defined above

Time Traveler
The first known use of time machine was in 1894

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Cite this Entry

“Time machine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/time%20machine. Accessed 29 May. 2025.

Kids Definition

time machine

noun
: a fictional machine that allows one to travel backward or forward in time
Last Updated: - Updated example sentences
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