Definitions

1. noun

a colourless, odourless, tasteless, non-flammable, and non-supporting gas that makes up about 78% of the Earth’s atmosphere

“The lab used nitrogen to preserve the samples for later analysis.”

2. noun

a chemical element of the halogen group with the symbol N, atomic number 7, and atomic mass 14.0067

“The chemist studied the properties of nitrogen in its elemental form.”

3. adjective

relating to or derived from nitrogen

“Nitrogen-fixing bacteria are essential for plant growth.”

4. noun

a compound that contains nitrogen, especially one used as a fertilizer

“The farmer applied nitrogen to her crops to increase their yield.”