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1. An often indirect effect, influence, or result that is produced by an event or action.
2. A recoil, rebounding, or reciprocal motion after impact.
3. A reflection, especially of sound.
[Middle English repercussioun, from Old French repercussion, from Latin repercussiō, repercussiōn-, from repercussus, past participle of repercutere, to cause to rebound : re-, re- + percutere, to strike; see percuss.]