əˌfɪliˈeɪʃən əˌsəʊʃiˈeɪʃən əˌsoʊʃiˈeɪʃən the act of becoming formally connected or joined welcomed the affiliation of the research center with the university a social or business relationship a valuable financial affiliation he was sorry he had to sever his ties with other members of the team many close associations with England