Phi Be ‧ ta Kap ‧ pa /ˌfaɪ ˌbiːtə ˈkæpə $ -ˌbeɪtə-/ BrE AmE noun
[ Date: 1700-1800 ; Origin: From the first letters of its Greek motto philosophia biou kybernetes 'philosophy the guide of life' ]
an American society for university and college students who have done well in their studies