Webster's Revised Unabridged Dictionary · 1913

Repercussion

Repercussion (-k?sh"?n) , noun

[Latin repercussio: compare French répercussion.]

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.
(Music) Rapid reiteration of the same sound.
3.
(Medicine) The subsidence of a tumor or eruption by the action of a repellent. — Dunglison
4.
(Obstetrics) In a vaginal examination, the act of imparting through the uterine wall with the finger a shock to the fetus, so that it bounds upward, and falls back again against the examining finger.