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Dictionary

ni•tro•gen

Pronunciation: (nī'tru-jun), [key]
—n. Chem.
a colorless, odorless, gaseous element that constitutes about four-fifths of the volume of the atmosphere and is present in combined form in animal and vegetable tissues, esp. in proteins: used chiefly in the manufacture of ammonia, nitric acid, cyanide, explosives, fertilizer, dyes, as a cooling agent, etc. Symbol: N; at. wt.: 14.0067; at. no.: 7; density: 1.2506 g/l at 0°C and 760 mm pressure.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

nitrofurantoin

nitrogenase

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