self-accelerating

adjective

self-ac·​cel·​e·​rat·​ing ˌself-ik-ˈse-lə-ˌrā-tiŋ 

: accelerating by oneself or itself especially as a result of previous acceleration

… the tipping point where revitalization feeds on itself, becoming self-sustaining, even self-accelerating.

—Storm Cunningham

Word History

First Known Use

1859, in the meaning defined above