Dihydrogen Monoxide is a chemical compound consisting of two hydrogen molecules and one oxygen molecule, commonly known as "Water".
some guy: Yo do you have some Dihydrogen Monoxyde?
B: bruh do I look like a chemist?
some guy: B Dihydrogen Monoxide is water?
B: oh yeah no worries.
by Spoopy Chicken August 29, 2019
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dihydrogen monoxide: It's more commonly known as water. You know, the substance that every single living being relies on to survive? The origins of this item are multifold, from flyers circulated at the University of California at Santa Cruz in 1989 (so 20th century!) to a junior high school student who surveyed 50 classmates in 1997 and got 43 of them to sign his petition to ban the chemical. He then won a prize at his science fair for his project, called "How Gullible Are We?" Several Web pages touting the chemical's dangers are still live. Don't feel too bad if you've ever fallen victim to this hoax; even a government official in New Zealand took the bait last year.
by l333 August 29, 2008
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Dihydrogen monoxide (DHMO) is a combination of 2 hydrogen and 1 oxygen (di = 2, mon = 1), which creates H2O. It is a completely safe element, but a hoax that was created in the 1990's as an April Fools joke got popular that said that DHMO was a chemical that was a substance that was contained in things such as acid rain, nuclear power plants, etc.
John: "Have you heard about the chemical Dihydrogen monoxide? I read that it was really dangerous and it's even in our water and food!"

Steve: "No, that is just water. Do more research and don't believe everything you read online."
by Ay Lmao September 4, 2015
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Dihydrogen Monoxide is a prevalent compound that is the key ingredient in most pesticides. DHMO contributes to environmental hazards such as acid rain, the greenhouse effect, and soil erosion. DHMO poisoning causes a sometimes fatal electrolyte imbalance in the bloodstream, and can cause excessive sweating, increased urination, and sometimes vomiting. Dihydrogen Monoxide also reacts explosively with alkaline earth metals such as lithium, sodium, potassium etc.
Prolonged, unprotected exposure to solid DHMO, or inhaling it can be fatal.
Despite these dangers, DHMO is used ubiquitously by industries, and is readily available to the public.
Join the fight, and help get this troublesome, and potentially lethal chemical banned.
SAY 'NO' TO DIHYDROGEN MONOXIDE!
by halo55555@hotmail.com October 1, 2006
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Dihydrogen Monoxide (or DHMO) is a tongue in cheek conspiracy theory that claims said substance is extremely dangerous, can cause burns, death, etc., when in reality, dihydrogen monoxide is the scientific name for water, as H2O is its chemical formula.
Person 1: Careful! There might be DHMO in your water!
Person 2: Dihydrogen Monoxide IS water.
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1) H20. More commonly known as water.
2) The compound which one Southern California town beileved was an extrememly harmful chemical after receiving a fraudulent warning letter. They pondered banning styrofoam cups after discovering 'dangerous' dihydrogen oxide is used in producing them.
John was thristy so he drank some dihydrogen oxide.
by 9 March 19, 2004
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