an atom of hydrogen, duh.
Urban Dictionary user: I wonder what is hydrogen atom?
Urban Dictionary: Look them up separately, you dumbass!
by 32121 July 27, 2016
Hydrogen psychosis is a fictional ailment acquired by SCUBA divers in the Wes Anderson-directed movie The Life Aquatic with Steve Zissou. It is apparently based on the very real health risk nitrogen narcosis, caused by the effects of relatively fast, relatively great changes in external pressure on the human body.
Man, you got hydrogen psychosis!
by Furieh April 8, 2006
The most powerful bomb. Opposite of atom bomb, but similar in power. While the Atom Bomb uses nuclear fission(a mass of material is assembled into a supercritical mass((a mass enough to start a nuclear chain reaction)). neutrons are then injected which causes the reaction and later the explosion).
hydrogen bombs instead use nuclear fusion,(joining of atoms to make heavier atoms.) then adding tritium, deuterium, or lithium deuteride, along with xrays and gamma rays from fission, making them thousands of times more powerful than atom bombs.yea.

(some of this info from www.wikipedia.org)
If you get hit by one of those you are screwed

Out of the 26,0000 nuclear bombs, the Russian Federation and the U.S own 96% of them. A lot of those are hydrogen bombs
by Alex14 June 21, 2006
An oil which has had hydrogen added to it to make it right up there with eating plastic. It also has a tendency to clog arteries. French fries, along with other things, from fast food resteraunts is often fried in this
*snort* I'm not eating that, it has hydrogenated oil in it.
by YourSquirrellyQueen April 16, 2007
The medicinal Special Forces. pour it on a cut, scrape, etc, and it'll foam white. hurts like crap, but it kills everything bad.
i usually wait about a day before applying Hydrogen Peroxide to a cut or scrape, that way it hurts less.
by Chowderz May 9, 2011
Something that can kill you if you drink it!
Its formula is H2O2!
It is proof that oxygen is like the human race... murdering as well as life-sustaining.

PS... It is not all bad, it can be used as a steriliser and as a teeth whitener, just DON'T DRINK IT!
Guy 1: I need a drink... Ahhh a cup of water.
Guy 2: DON'T THAT'S HYDROGEN PEROXIDE, IT'LL KILL YOU!!!
Guy 1: Relax m8, it's just an extra oxygen atom...
Guy 2: But Oxygen is like the human race... it's...
(Guy 1 goes all pale and dies)
Guy 2: NOOOO, H2O2 kills... I didn't make that obvious??? WAAAAAAAA
by Itz Rob May 1, 2016
A fart performed underwater or that must go through water (ie in the shower) that must mix with left over oxygen in the H2O or something, coz dis shit stinks!
I drop these H-Bombs at your sister's pool party ha ha ha.

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Bitch

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You dolt!
by Kung-Fu Jesus April 30, 2004