Transmedia is the new word people are using to reference the process of telling a story through multiple media. It's a nice, short, evocative and useful word. Throw it out in a few meetings this week and see what kind of reaction you get.
Dungeons and Dragons may be the original transmedia story, according to Lucas J.W. Johnson at Silverstring Media. Star Wars is also an excellent example. What D+D can tell us about Transmedia
Transmedia is kind of the new convergence.