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3.
Super radioactive metal that turns green in the dark. Used in the Fat Man bomb, only 10kg is needed to reach critical mass (self-sustaining reaction.) If exposed to humid conditions, it can spontaneously combust.
Torch: You have a package...Plutonium!?
Slash: Yep, I was bored.
Torch: Wha...omfg...
Slash: It says the guy who discovered it kept it in a matchbox inside his desk. Weird.
by The Mr Needles Experience October 04, 2006
 
1.
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.
by Eyeballflyball July 15, 2003
 
2.
The antithesis of Gold.
I thought I was gold.

Then I found out I was plutonium:(
by Dick Tonium July 27, 2014
 
4.
The spiciest herb in the world, used by most Asian and Arab resteraunts to add flavor to their foods.

In 1958, however, the United States banned the use of plutonium in food, resulting in many plutonium spice companies either going bankrupt or moving out of the country.
Johnny: Dude! I just got some plutonium!

Dan: Are you shitting me!?

Johnny: I shit you not! I'm gonna make some General Taos Chicken with it!

Dan: That shit's gonna be awesomely spicy!
by Shadow the Bird Kid April 26, 2008
 
5.
really really really dope
yo that new wu-tang clan track is fucking PLUTONIUM.
 
6.
Shit that will blow you up
Tommy was sitting in his house when some Plutonium was dropped on his house. bye bye tommy
by Mike September 23, 2004
 
7.
A l33t man. My favorite buttbuddy.
Plutonium is l33t.
by SuicideTaxi August 05, 2003