A 'nanowrimo graphic novel' is likely a graphic novel related to National Novel Writing Month (NaNoWriMo). NaNoWriMo is an event where people aim to write a novel in a month. So, perhaps it's a graphic novel that was created during this event, or it's a story about the NaNoWriMo experience in graphic novel form.
A 'nanowrimo graphic novel' is a really interesting concept. NaNoWriMo encourages people to write a 50,000 - word novel in a month. A graphic novel related to this could be a visual representation of that journey. It could show the chaos, the inspiration, and the determination of the writers. Maybe it has panels showing writers hunched over their desks late at night, or the moment of breakthrough when they come up with a great idea. It could also be a graphic novel that was written during NaNoWriMo and then adapted into a more visual medium, with the illustrations enhancing the story that was initially written in text.
Well, 'nanowrimo' stands for National Novel Writing Month. A 'nanowrimo graphic novel' could be a novel in graphic form that was inspired by the concept of NaNoWriMo. It might feature characters going through the challenges of writing a novel within a month, like dealing with writer's block, time management, and the creative process. Or it could be a collection of stories that were born out of the NaNoWriMo community and are presented in a graphic novel format.