Pronunciation: ˌ shpe ŋ - ' glir- ē - ə n, ˌ spe ŋ -, - ' lir-
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