Top Definition
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 18, 2004

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A fancy term for water
"Please pass the dihydrogen Oxide."
by Osko November 13, 2006

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Lotsa space for your liquids.

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Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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Water, chemical compound of.
"Ban dihydrogen oxide! It is a dangerous chemical!"

"That joke was funny, maybe 4 years ago."
by Kiko December 16, 2003

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt