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nitrogen

ni·tro·gen

nitrogen

 
pronunciation:
naI tr jn
features:
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part of speech: noun
definition: a gas with no color or smell that is one of the chemical elements. Nitrogen makes up about eighty percent of the earth's atmosphere, and it is also found in all living things. (symbol: N)
derivation: nitrogenous (adj.)
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See
  air, cell, element, grass