nitrogen.
The chemical element (symbol N) with an atomic number of 7 and atomic weight of 14.0067. It is a colorless and odorless gas.
Meaning & usage
The chemical element (symbol N) with an atomic number of 7 and atomic weight of 14.0067. It is a colorless and odorless gas.
By molar fraction, nitric oxide contains equal parts nitrogen and oxygen.
Molecular nitrogen (diatomic nitrogen), N₂, a colorless, odorless gas at room temperature, which constitutes most of air (78% of it).
The air you breathe is mostly nitrogen.
The truck was carrying tanks of nitrogen, so there was no fire risk. Police stated that if the truck had been carrying tanks of oxygen, as it often does, there might have been an explosion.
A specific nitrogen atom within a chemical formula, or a specific isotope of nitrogen.
The two nitrogens are located next to one another on the ring.
Where this word comes from
Borrowed from French nitrogène (coined by French chemist and physician Jean-Antoine Chaptal in 1790). By surface analysis, nitro- + -gen. See also niter.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.