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ni·tro·gen
 nitrogen
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- 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)
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| definition 2: |
nitrogen chilled below -196 degrees Celsius so that it is a liquid, used as a refrigerant and quick-freezing agent.
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| definition 3: |
any mixture containing organic compounds of nitrogen, used as a fertilizer.
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| related words: |
manure |
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| derivation: |
nitrogenous (adj.) |
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