I. SEC /ˌes iː ˈsiː/ BrE AmE
abbreviation for ↑ Securities and Exchange Commission
II. Seˌcurities and Exˈchange Comˌmission, the BrE AmE abbreviation , SEC
a US government organization which makes sure that people and companies obey the laws about the sale of stocks (↑ stock 1 ) and bonds (↑ bond 1 )