The term has made the dictionary, with Merriam-Webster recently creating an entry for “super PAC,” publishing it on its online unabridged edition.
The definition by Merriam-Webster:
Super PAC, noun: a type of political action committee that is legally permitted to raise and spend larger amounts of money than the amounts allowed for a conventional PAC; specifically: an independent PAC that can accept unlimited contributions from individuals and organizations (such as corporations and labor unions) and spend unlimited amounts in support of a candidate but that cannot directly contribute money to or work directly in concert with the candidate it is supporting
