nitrogen

Meanings

1. 1
   noun

   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).

2. 2
   noun

   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.

3. 3
   noun

   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.

4. 4
   noun

   a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas

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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