Usually means: Nitrous oxide, commonly laughing gas.
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We found 8 dictionaries that define the word n2o:

General (2 matching dictionaries)
  1. N2O: Dictionary.com
  2. N2O (disambiguation), N2O, N2o: Wikipedia, the Free Encyclopedia

Computing (1 matching dictionary)
  1. N2o: Encyclopedia

Medicine (1 matching dictionary)
  1. N2o: Medical dictionary

Miscellaneous (2 matching dictionaries)
  1. N2O: Acronym Finder
  2. AbbreviationZ (No longer online)

Science (1 matching dictionary)
  1. Environmental Terminology Discovery Service (No longer online)

Slang (1 matching dictionary)
  1. N2O: Urban Dictionary






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