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What does H2O stand for?

H2O stands for Dihydrogen Monoxide (water)

This definition appears very frequently and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

See other definitions of H2O

Other Resources:
We have 14 other meanings of H2O in our Acronym Attic

Samples in periodicals archive:

Yet there is very little public debate about the dangers of dihydrogen monoxide apart from on a few websites.
But even more chilling is the story of young Nathan Zohner who won the Greater Idaho Science Fair by getting 43 of 50 passers by to sign a petition to ban dihydrogen monoxide because it can be fatal if inhaled, is a major component of acid rain and can be found in the tumors of terminal cancer patients.