re·tor·sion or re·tor·tion 
(rĭ-tôrshən)
(rĭ-tôrshən)n.
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.]
- quartan
- quarter
- quarterage
- quarterback
- quarterback sneak
- quarter day
- quarterdeck
- quarterfinal
- quarterfinalist
- quarter horse
- quarter-hour
- quarter hour
- quarterly
- quartermaster
- quartern
- quarter note
- quarter-phase
- quarterpipe
- quarter rest
- quartersaw
- quarter section
- quarterstaff
- quartertone
- quartet
- quartette