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
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In a last-minute twist, Alice reveals the existence of a second time machine. Brian Davids, HollywoodReporter, 30 Mar. 2026 Marty still accidentally goes back to 1955 in a DeLorean turned into a time machine by Doc — still one of the greatest story bits ever. Rick Mauch, Fort Worth Star-Telegram, 25 Mar. 2026 His time machine is constructed from a see-through raincoat, an angry piggy backpack, a bunch of wires and tubes, and every sci-fi-looking gizmo and doodad the prop department could hot-glue to it. Richard Edwards, Space.com, 17 Mar. 2026 There is perhaps no sport that is more in thrall to the dictates of orthodoxy than baseball, which is so steeped in tradition that a visit to the ballpark is often a bit like hopping into a time machine. Anthony Crupi, Sportico.com, 13 Mar. 2026 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

Browse Nearby Words

Cite this Entry

“Time machine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/time%20machine. Accessed 5 Apr. 2026.

Kids Definition

time machine

noun
: a fictional machine that allows one to travel backward or forward in time
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