Re`per*cus"sion (-k?sh"?n), n. [L.
repercussio: cf. F. 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. (Mus.) Rapid reiteration of the same
sound.
3. (Med.) 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.