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time reversal

noun Physics.
  1. the mathematical operation of reversing the direction of time. Symbol: T
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Origin of time reversal

First recorded in 1920–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

time reversal in Science

time reversal

  1. A mathematical operation on the description of a physical system in which the signs of variables representing time are reversed. Also called time conjugation See more at invariance.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.