NITROGEN Definition & Meaning

nitrogen

[ nahy-truh-juhn ]

Phonetic (Standard)IPA

noun

Chemistry.

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, especially in proteins: used chiefly in the manufacture of ammonia, nitric acid, cyanide, explosives, fertilizer, dyes, as a cooling agent, etc. : N; : 14.0067; : 7; density: 1.2506 grams/liter at 0°C and 760 millimeters pressure.

nitrogen

/ ˈ�Բ�ɪ�ٰ�ə��ə�� /

noun

1. a colourless odourless relatively unreactive gaseous element that forms 78 per cent (by volume) of the air, occurs in many compounds, and is an essential constituent of proteins and nucleic acids: used in the manufacture of ammonia and other chemicals and as a refrigerant. Symbol: N; atomic no: 7; atomic wt: 14.00674; valency: 3 or 5; density: 1 2506 kg/m³; melting pt: –210.00°C; boiling pt: –195.8°C
2. ( as modifier )
  nitrogen cycle

nitrogen

/ ��ī′�ٰ�ə-��ə�� /

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

nitrogen

A chemical element that makes up about four-fifths of the atmosphere of the Earth . Its symbol is N.

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Notes

Like carbon , nitrogen is a necessary element in the tissues of living things.

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51�Թ� History and Origins

Origin of nitrogen¹

First recorded in 1785–95; from French �Ծ��ٰ��ǲ�è�Ա�; nitro-, -gen

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Example Sentences

Examples have not been reviewed.

Depending on the type of rocket fuel used, launches produce nitrogen oxides, chlorine, black carbon particles, water vapor, carbon monoxide and carbon dioxide — and no propellant avoids creating of some kind of emissions.

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Once the energy is in our atmosphere, reactions with oxygen and nitrogen then bring the colours we associate with the aurora.

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Methane and other gases, notably nitrogen oxide from gas stoves, are linked to higher risks of asthma.

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A study of Northern California residents last year found carbon monoxide and nitrogen dioxide exposure, largely the product of vehicle emissions, was correlated with risk of tuberculosis.

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“Here we show that Bennu samples are volatile rich, with more carbon, nitrogen and ammonia than samples from asteroid Ryugu and most meteorites,” the scientists write.

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