DC abbreviation commonly used to distinguish Washington, District of Columbia, capital of the United States, from Washington State, capital Seattle, to the northwest of the country. 2 . Abbreviation of DC Comics, a publishing house dedicated to the realization and commercialization of comics, founded in 1937. DC is an abbreviation for Detective Comics, one of its first flagship titles. It has recently been acquired by AOL-Time Warner. It is one of the largest comic book companies worldwide. Among his best-known titles are Superman, Batman, Wonder Woman, Justice League, Flash, and Green Lantern.