time reversal


: a formal operation in mathematical physics that reverses the order in which a sequence of events occurs

Examples of time reversal in a Sentence

Recent Examples on the Web In contrast, time interfaces can enable time reversal very quickly and with little energy, Alù says. IEEE Spectrum, 21 Mar. 2023 It is known as time reversal symmetry. Frank Wilczek, WSJ, 17 Nov. 2022 Currently, the most common way of performing such time reversal is through digital means, but this results in time, energy and memory demands. IEEE Spectrum, 21 Mar. 2023 Using lasers and Lego mini-figures, Anderson is studying time reversal to see how targeted sound vibrations might be useful in applications from medicine to the military to communications. Jennifer Ouellette, Ars Technica, 16 Dec. 2021 Then time reversal would be a good symmetry of nature! Sean Carroll, Discover Magazine, 20 Nov. 2012 One of the biggest benefits of the time-reversal machine and this technique, which the physicists call SATIN (signal amplification through time reversal), is improving the accuracy of atomic clocks. Joshua Hawkins, BGR, 18 July 2022 Experimental data illustrating waves being focused using time reversal, followed by demo of knocking over LEGO mini-figures. Jennifer Ouellette, Ars Technica, 16 Dec. 2021 Their secret weapon: a futuristic technology called time reversal. Jennifer Ouellette, Ars Technica, 20 Dec. 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'time reversal.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1955, in the meaning defined above

Time Traveler
The first known use of time reversal was in 1955

Dictionary Entries Near time reversal

Cite this Entry

“Time reversal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/time%20reversal. Accessed 19 Apr. 2024.

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