time machine


Definition of time machine 

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

Examples of time machine in a Sentence

Recent Examples on the Web

The time machine must have its dial stuck to the 1930s because next week the team’s heading to 1936 Texas. Rachel Kaufman, Smithsonian, "JFK’s Excellent Adventure: “Timeless,” Season 2, Episode 5 Recapped," 16 Apr. 2018 Wochit Brad Pitt is hitting the time machine in his latest role. Andrea Mandell, USA TODAY, "See Brad Pitt's first official (groovy!) photo on set after split from Angelina Jolie," 27 June 2018 Our rules are there’s this tree trunk of time, and then with the time machine, if someone goes back to an earlier moment the tree trunk can grow in a different direction. Rachel Kaufman, Smithsonian, "How the Writers of “Timeless” Mined History for its Riveting Second Season," 14 May 2018 The team’s key insight was to use the hospital’s medical records as a proxy time machine. Siddhartha Mukherjee, New York Times, "This Cat Sensed Death. What if Computers Could, Too?," 3 Jan. 2018 The study was conducted by scientists in the aquarium’s new Ocean Memory Lab, which uses the chemical and organic makeup of the ocean ecosystem as a kind of time machine. Peter Fimrite, San Francisco Chronicle, "A century of seabirds’ feathers reveals a changing Pacific Ocean," 21 Feb. 2018 Bowman's best acquisition would be a time machine that turned all the 30-somethings on his roster into kids again. Steve Rosenbloom, chicagotribune.com, "Debating the Blackhawks' future: the roster, possible trades and more," 5 Apr. 2018 So break out your moon booties and slip into the driver’s seat of your own personal time machine. Bess Matassa, Teen Vogue, "Weekly Horoscopes January 15-21," 5 Apr. 2018 Stop your time machines and drop your Wizards, because a beautiful Phil of the Future reunion just went down in the year 2121 2018. Stacey Grant, Seventeen, ""Phil of the Future"'s Phil and Keely Reunited in the 21st Century," 7 Feb. 2018

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.

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First Known Use of time machine

1895, in the meaning defined above

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Last Updated

31 Aug 2018

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Time Traveler for time machine

The first known use of time machine was in 1895

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More Definitions for time machine

time machine


English Language Learners Definition of time machine

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

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