REPERCUSS'IVE, adjective 1. Driving back; having the power of sending back; causing to reverberate; as repercussive rocks. 2. Repellent; as a repercussive medicine. [Not in use.] 3. Driven back; reverberated. REPERCUSS'IVE, noun A repellent. obsolete
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI