fission 

Fission is the splitting of one, tangible or intangible, into two or more new things that possess either properties from one or the other. In physics it is the splitting of one element to create two or more new ones. Splitting a single Helium atom into two Hydrogen atoms.

Nuclear fission could cause energy problems.

fission by Definition Evil Twin November 25, 2013

Fission Mailed

Originated from Metal Gear Solid 2 Sons Of Liberty. What is different is that they changed the first two letters in order to confuse the player. Sometimes used on messageboards to show defeat or total pwnage.

"That sign said Mission Failed so I turned the power off."

"Dude, it was Fission Mailed, they just tried to confuse you, now you gotta start all over again cause you didn't save. Pwned!

Fission Mailed by SCANK April 18, 2005

FISSION MAILED

A term loosely meaning that you have been embarrassed to the highest degree, similar to pwned and You Got Served

Origin: Metal Gear Solid 2 near the end of the game, there's a screen that says that very phrase that's supposed to mimic the "Mission Failed" message you get when you normally die in said game.

Dude, your girlfriend sucked my cock last night! FISSION MAILED!

FISSION MAILED by DANfan February 20, 2005

Fission Product 

Basically everything on the periodic table except extremely radioactive. Stereotypically known as the scary stuff that Fukushima and Chernobyl released from their damaged nuclear reactors poisoning the surrounding countryside forever.

The Fission Product releases from the spent fuel pool fire expelled many times the radioactive materials that one reactor could have released.

The fuel elements were ejected from the core during subsequent explosions and the fission products will be a hazard for many centuries to come.

The Fuel lava consists of various fission Products.

Fission Product by Sir Geiger May 9, 2012

Fission Mailed

A word that is said in occurance when absolute and complete pwnage has been indignantly brought upon by a poor soul.

Allan FISSION MAILED! it when Travis threw a tennis ball at Allan's left nut.

Fission Mailed by PLLL0WTALK January 6, 2006

Fission Mailed

Derives from the game "Metal Gear Solid 2"

it means "Mission Failed". which is used as a derogative term to slander someone/ someones argument that they've put forward in a debate, it is both patronizing and shows that you're putting an end to the argument.

Considered to be part of l33t sp33k. Gaming slang. Often used as the end of a sarcastic comment.

Oh yeah!! i forgot Lilly Allen does write good lyrics!! ......Fission Mailed.

Fission Mailed by Intrinsic_IZ_Clutch July 20, 2009

[Fission Mailure] 

A word of which was founded when swapping the first letters of the phrase "Mission Failure"
1. A Complete Fail
2. The Act of Mailing A Fission
3. "WoW YoU F41L 50h4rd u n00b! Tr0l0l0l0l0l!!"

(Man is masturbating)Ohhh Babbyy hheerree iitt ccoommees!!! 'squirt' Whaaa????!!!! "FISSION MAILURE"

Man you real Mailed your Fission when you passed out at your wedding bro (ALL)"FISSION MAILURE!!!"

[Fission Mailure] by DatOneNigga February 14, 2012