A superconference (also super-conference or super conference) is an athletic conference noted for its large number of members, significant revenue generation, and substantial power that it wields in comparison to at least some of its counterpart conferences. The term is typically used in reference to college athletics in the United States. Because superconferences are emergent and not clearly defined, the term is often used in a hypothetical and speculative way, although one definition of American college superconferences posits that they must form from leagues that were Automatic Qualifying (AQ) conferences during the era of the now-defunct Bowl Championship Series, possess a significant multi-network television deal, and at least consider expanding to the "magic number" of 16 members. The term, though used infrequently before 2010, has historical roots in the proposed "Airplane Conference" of 1959, the Metro Conference's 1990 plan to expand to 16 members, the expansion of the Western Athletic Conference (WAC) to 16 members in 1996, and the creation of 12-team, two-division conferences with football championship games by the Southeastern Conference (SEC), Big 12 Conference, and Atlantic Coast Conference (ACC) in the 1990s and 2000s. Since major conference realignment began in 2010, the term has been used to describe the expanding ACC, Big 12, Big Ten, Pac-12, and SEC conferences.