time reversal
noun
: a formal operation in mathematical physics that reverses the order in which a sequence of events occurs
Example Sentences
Recent Examples on the Web 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
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 Word History
First Known Use
1955, in the meaning defined above