praxeologyyoudaoicibaDictYouDict[praxeology 词源字典]
"The branch of knowledge that deals with the nature of human action, especially in later use as understood in economic theory by the Austrian economist Ludwig von Mises (1881-1973) and his followers", Late 19th cent.; earliest use found in Presbyterian Review. From ancient Greek πρᾶξις + -ology, partly after French praxéologie.[praxeology etymology, praxeology origin, 英语词源]