Meaning

noun a psychology based on the assumption that all mental process are useful to an organism in adapting to the environment

noun any doctrine that stresses utility or purpose

originEtymology tree Old French fonction Middle French functionbor. English function Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālisbor. Old French -albor. ▲ Latin -ālis Old French -elbor. ▲ Latin -ālisbor. Middle English -al English -al English functional Proto-Indo-European *-id- Proto-Indo-European *-yéti Proto-Indo-European *-idyéti Proto-Hellenic *-íďďō Ancient Greek -ῐ́ζω (-ĭ́zō)…

Etymology from Wiktionary, CC BY-SA 3.0