From Longman Dictionary of Contemporary EnglishPhi Beta KappaPhi Be‧ta Kap‧pa /ˌfaɪ ˌbiːtə ˈkæpə $ -ˌbeɪtə-/ noun SECan American society for university and college students who have done well in their studiesOrigin Phi Beta Kappa (1700-1800) From the first letters of its Greek motto philosophia biou kybernetes “philosophy the guide of life”
