nitrogen
UK /ˈnaɪ.tɹə.d͡ʒən/ US /ˈnɑɪ.tɹə.d͡ʒən/
noun 3
Definitions
noun
1
The chemical element with an atomic number of 7 and atomic weight of 14.0067. It is a colorless and odorless gas.
Holonyms: dinitrogen, N₂, nitrogen (loose sense)
By molar fraction, nitric oxide contains equal parts nitrogen and oxygen.
2
Molecular nitrogen (diatomic nitrogen), N₂, a colorless, odorless gas at room temperature, which constitutes most of air (78% of it).
Meronyms: nitrogen (strict sense), N
The air you breathe is mostly nitrogen.
3
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.
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