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Related to retorsion: reprisal
re·tor·sionor re·tor·tion (rĭ-tôr′shən)
An act perpetrated by one nation upon another in retaliation or reprisal for a similar act perpetrated by the other nation.
[Probably French rétorsion, from Latin retortus (influenced by Late Latin torsiō, a twisting, wringing), past participle of retorquēre, to cast back; see retort1.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Government, Politics & Diplomacy) rare retaliatory action taken by a state whose citizens have been mistreated by a foreign power by treating the subjects of that power similarly; reprisal
[C17: from French; see retort1]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014