Entry from US English dictionary
Definition of super PAC in English:
A type of independent political action committee which may raise unlimited sums of money from corporations, unions, and individuals but is not permitted to contribute to or coordinate directly with parties or candidates: in the 2010 congressional races, super PACs spent over $60 million
1980s (in the broader sense 'a political action committee that is subject to less stringent restrictions on certain types of fundraising and expenditure'): from super- + PAC1.
Definition of super PAC in: