Definition of "nitrogen" in English

noun

1. (uncountable) The chemical element (symbol N) with an atomic number of 7 and atomic weight of 14.0067. It is a colorless and odorless gas.

2. (uncountable) Molecular nitrogen (N₂), a colorless, odorless gas at room temperature.

3. (countable) 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.