Top definition
n. A material invented purely to further the plot of a story, without any regard given to its scientific feasibility.
Jonathan: So how did they turn the planet Vulcan into a black hole?

Richard: Oh, they used red matter, of course. Don't worry about how it works, it's 100% pure plotanium.
by therichardstill May 07, 2009
Get the mug
Get a Plotanium mug for your Uncle Callisto.