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Half-Life is a revolutionary game for computer; more need not be said.

An element's half life is the period of time it takes for half of the radioactive isotopes to decay. It is ibnot/b/i used to describe the dissapation of something not radioactive(subliminal hintcaffeine for instance /subliminal hint)
Random_Gaming_Publication: And our game of the year award goes to... Half-Life
The_rest_of_the_word: ... really? *yawn*

Random_Chem_1_teacher: The radioactive half-life of carbon60 is approximately 6000 years.
by opium April 30, 2003
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2
1. The length of time needed for half the atoms of a radioactive isotope sample to decay
2. A sweet game
We are learning about Half-Lifes in Science.

I pwn at Half-life 2.
by Kupo December 21, 2004
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3
A very good computer game that gets abused by HALO zombies. Basic single player owns. Got lots of addictive mods.
Half-Life owns. And Half-Life 2 will own HALO2
by Gungsta-Pasta August 04, 2003
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4
It was awarded "Game of the Year" by over 50 publications for its debut in 1999.

I need not say more then this;
NO GAME WILL BEAT THE TITLE SAID BELOW!!
"Best Game of All Time" - PC Gamer
Half-Life was named "Best Game of All Time" by PC Gamer magazine in its November, 1999 issue.
by XxKenjiYamaguchi July 06, 2004
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5
a great pc game or,
going half life is beating the sh*t out of some one with a crowbar
"i'm going to go play half life"

"i'm going to go half life on your ass"
by captain bernard July 22, 2008
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6
The game with the best mods ever.
Hostile intent
Pirates vikings and knights
Sven coop
Hammy-bob mod
Rocket crowbar 2
Grenades, snarks and teleporters
Natural selection
Front line force
Etc. Etc. Etc.
by A_Llama March 04, 2004
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7
The half life of a radioisotope is the time taken for the current level of radioactivity to drop to half that amount. Note that this means radioactive decay follows the curve of a decaying exponential. Oh, as mentioned, it is also somewhat of a revolutionary computer game. "As for the suit, I think you've earned it"
Carbon-14 has a half-life of 5,730 years. Let's say its radioactivity 'level' at time = 0 is 2. After around 5,730, its radioactivity will be 1, After a further 5,370 years its radioactivity will be 0.5, and after yet another half life, the radioactivty would be 0.25, and so on.
by Chavez77 June 22, 2006
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