ni·tro·gen (n tr -j n)n. Symbol N A nonmetallic element that constitutes nearly four-fifths of the air by volume, occurring as a colorless, odorless, almost inert diatomic gas, N 2, in various minerals and in all proteins and used in a wide variety of important manufactures, including ammonia, nitric acid, TNT, and fertilizers. Atomic number 7; atomic weight 14.0067; melting point -209.86°C; boiling point -195.8°C; valence 3, 5. See Table at element.
[French nitrogène : nitro-, nitric acid (from New Latin; see nitro-) + -gène, -gen.] |
nitrogen [nite-roj-jen] Noun
Chem a colourless odourless gas that forms four-fifths of the air and is an essential part of all animal and plant life Symbol: N
nitrogenous adj
nitrogen (n tr -j n) Symbol N A nonmetallic element that makes up about 78 percent of the atmosphere by volume, occurring as a colorless, odorless gas. It is a component of all proteins, making it essential for life, and it is also found in various minerals. Nitrogen is used to make ammonia, nitric acid, TNT, and fertilizers. Atomic number 7; atomic weight 14.0067; melting point -209.86°C; boiling point -195.8°C; valence 3, 5. See Periodic Table. See Note at oxygen. |
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| Noun | 1. | nitrogen - a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissueschemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter azote - an obsolete name for nitrogen air - a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of; "air pollution"; "a smell of chemicals in the air"; "open a window and let in some air"; "I need some fresh air" gas - a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely |
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