Alright, gather 'round, it's story time folks! DC in 'DC Comics' stands for the company’s first ever series - 'Detective Comics'. Interesting, right? Around 1937, DC was just a fledgling company, looking to make its mark. Where Marvel had cornered the market with the much-loved 'Superman', DC finally found their gem in 'Batman'.
As a small boy dressed in his detective gear, Batman encapsulated the imagination of kids and adults alike. With the popularity that Batman quickly garnered, it seemed fitting that 'Detective Comics', housing Batman's story, would be the titular representation.
So, despite having various other comic series now, the name 'DC' is an homage to the comic book that helped launch them into popularity. Definitely a nod to its roots, don't you think?