In Halo, blue grenades that stick to almost any surface and explode in a cool way.
Pro: don't forget, THE BLUE ONES STICK.
Newbie: *accidentally sticks on to back of Pro's head* they what?! oh sh*t!
*BOOM*
*Pro has been killed by ally Newbie*
*Newbie has killed self*
Blue team: -2
Red team: 0
by Cpt.Bob October 6, 2003
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(In Halo for Xbox) A directed energy weapon used by Covenant Forces. Capable of semi-automatic or automatic fire, although continuous rapid fire overheats the weapon which in turn depletes the power core. The power output is 100-150 kV : 2-3dA, rate of fire is 420-600 RD/MIN. It is currently unknown how to replace or recharge a power core.
by Caboose March 23, 2004
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n. The lesser of the two grenades in the game series "Halo". Newbs like to assume that because these grenades 'stick' to enemies that they are better grenades than fragmentation grenades, but any expierenced player can easily avoid them. They lack the 'grenade bounce' effect of frag grenades and therefore are less aesthetic in their usage. The most effective implementation of the plasma grenade is to through a 'hidden' one behind a corner that an enemy will soon approach so they do not see it. This will most likely kill the enemy given that most players seem to hug walls when turning corners and anyone within a 3 foot radius of the plasma grenade will automatically be killed.
Newb: *throughs plasma grenade at sniper*
Pro: *unscoping every two secounds alows him to see approaching grenade* "Haha, fuking newb"
Newb: "Oh, Shit!" *sniped in teh face*
Pro: *notices approaching enemy, tosses plasma behind corner, proceeds to snipe*
Newb: *"Haha, I'll assasinate 'im"* "WTF IS THAT" *killed by Pro by correct usage of plasma grenade*
by Weapon X Ultimate February 7, 2006
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A glass ball, with some inert gasses at low pressures inside it, with an often ugly base, and a round thing in the middle with electricity running through it to cause the gasses to become the fourth state of matter, plasma. This is possible without melting the glass and wasting a lot of electricity by having a very low pressure within the glass thingy.
Whoa, that plasma ball is shiny. Now I'll stare at it and put my hands on it for hours!
by DLG June 30, 2003
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A fairly powerful, pistol like plasma weapon that uses energy cells as it's primary ammunition. It's found in Fallout New Vegas and is similar to the weapon obtainable in the original Fallout I and II (under the name "Plasma Pistol" in the first two games).
Fallout Addict: "Dude I just vaporized a Deathclaw with that plasma defender! WOO HOO!!!"

Bob: People still play fallout?
by thefalloutaddict July 21, 2011
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A weapon in the Xbox game Halo 2 that, when charged to full strength, can deplete a target's shields fully. It is very small and almost useless to use alone, but is one of the most powerful weapons in Halo 2 when used in the right way.

Often used in the Noob Combo.
Player 1: Put down the Plasma Pistol, already! Have pity!

Player 2: Yeah, sure, biyatch.
by Mehro March 25, 2005
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the sweat that seeps out of the pores located between the underside of the testicle sac and the asshole
after the long practice, my balls were all sweaty with grundle plasma
by trizzles May 25, 2005
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