Plotanium 

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.

Plotanium by therichardstill May 8, 2009

Pentanium 

A derivative of the 'Pentium' processor used by non-tech saavy consumers when looking for this type of processor.

"Excuse me, do you have any Pentanium processors? You see my hard drive in my modem caught on fire and I need to replace my Pentanium."

Pentanium by Kevlar D November 10, 2007

Plutonium 

A naturally radioactive, silvery, metallic transuranic element, occurring in uranium ores and produced artificially by neutron bombardment of uranium. Its longest-lived isotope is Pu 244 with a half-life of 76 million years.

I just ate a few pounds of plutonium.

Plutonium by Eyeballflyball July 15, 2003

Plutonium Blast Rifle 

Slang for any type of bong with a very large capacity for smoke.

Captain: load the plutonium blast rifle!
Ensign: AYE SIR!
Captain: Ignite Plutonium blast rifle!
Captain: :::::BUBBLING:::::
Captain: :::::violent Coughing:::::
seconds later.....
Ensign: sir do you need to report to sick bay?
Captain: shutup chris!

Plutonium Blast Rifle by Neb sicnarf January 16, 2008

Pootonium 

Horrendous foul-smelling shit, often discovered after a curry or more often known as 'beer shits'. The smell of pootonium is highly toxic and should be avoided at all costs.

Dave: I wouldn't go in there for a while, I just dropped my guts.

Steve: Smells like some weapons-grade pootonium!

Pootonium by likeakipper8 January 16, 2011

plutonium 

The antithesis of Gold.

I thought I was gold.

Then I found out I was plutonium:(

plutonium by Dick Tonium July 27, 2014

plytanium

1. Seemingly high-end construction, later determined to be of dubious quality.
2. An acknowledgement of one's own less-than-stellar construction abilities.

1. A: Hey, your bookcase collapsed. B: Yeah, it's made of weapons-grade plytanium.

2. A: I sure hope my sad-ass plytanium scaffold doesn't collapse before this garage gets painted.

plytanium by Jeff Pillasch March 17, 2008