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nitrogen

ni·tro·gen

nitrogen

 
pronunciation:
naI tr jn
features:
Word Combinations (noun), Word Explorer
part of speech: noun
definition 1: a chemical element that has seven protons in each nucleus and that occurs as a colorless, odorless gas that comprises about eighty percent of the earth's atmosphere, or in important compounds such as nitrates, proteins, nucleic acids, and ammonia. (symbol: N)
definition 2: nitrogen chilled below -196 degrees Celsius so that it is a liquid, used as a refrigerant and quick-freezing agent.
definition 3: any mixture containing organic compounds of nitrogen, used as a fertilizer.
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derivation: nitrogenous (adj.)
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  air, cell, element, grass