Main Entry: Spen·gle·ri·an

Pronunciation: \ˌshpeŋ-ˈglir-ē-ən, ˌspeŋ-, -ˈlir-\

Function: adjective

Date: 1922

: of or relating to the theory of world history developed by Oswald Spengler which holds that all major cultures undergo similar cyclical developments from birth to maturity to decay

— Spenglerian noun