Definition of post-accelerating in English:
post-accelerating
adjective ˌpəʊstəkˈsɛləreɪtɪŋˌpəʊstakˈsɛləreɪtɪŋ
Bringing about post-acceleration.
Origin
1940s; earliest use found in Proceedings of the Institute of Radio Engineers. From post- + accelerating.