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repercussion

1. The act of driving back, or the state of being driven back; reflection; reverberation; as, the repercussion of sound. Ever echoing back in endless repercussion. (hare)

2. Rapid reiteration of the same sound.

3. (Science: medicine) The subsidence of a tumour or eruption by the action of a repellent.

4. (Science: obstetrics) In a vaginal examination, the act of imparting through the uterine wall with the finger a shock to the foetus, so that it bounds upward, and falls back again against the examining finger.

Origin: L. Repercussio: cf. F. Repercussion.