Panhellenic Syllabification: (Pan·hel·len·ic)Pronunciation: /ˌpanhəˈlenik/Definition of Panhellenic adjective of, concerning, or representing all people of Greek origin or ancestry. relating to, advocating, or denoting the idea of a political union of all Greeks. of, concerning, or representing all college fraternities and sororities. Panhellenic in other Oxford dictionaries Definition of Panhellenic in the British & World English dictionary