Nitrogenous fertilizer; a type of fertilizer rich in nitrogen used to promote the growth of plant stems and leaves and increase crop yields.

Nitrogen in a liquid state, commonly used as a refrigerant

nitrogen gas

nitrogen dioxide; a toxic reddish-brown gas with a pungent smell, often used to produce high concentrations of nitric acid

A chemical compound formed by the combination of nitrogen with another element, categorized into metallic and non-metallic types.

Microorganisms in the soil that convert nitrogen gas from the air into ammonia or other nitrogen compounds that can be absorbed and used by plants.

A general term for chemical compounds formed from nitrogen and oxygen, such as nitric oxide and nitrogen dioxide. These compounds are often toxic pollutants that contribute to smog and respiratory irritation. Also written as [[氮氧化合物|氮氧化合物|dan4 yang3 hua4 he2 wu4]].

nitrous oxide (N2O) or laughing gas

nitric oxide; colorless toxic gas that acts as a signaling molecule in the body

The process by which nitrogen in the air is converted into organic compounds or forms that can be easily used by living organisms; azofication.

gallium nitride (GaN)

A general term for chemical compounds composed of nitrogen and oxygen, such as nitric oxide and nitrogen dioxide. These toxic pollutants contribute to smog, reduce visibility, and cause respiratory irritation.

nitrene; a highly reactive chemical species containing a neutral nitrogen atom with seven electrons infilled valence electrons

A fitness supplement taken before exercise to increase energy and focus

nitrogen mustard; a class of cytotoxic chemical compounds used as chemical weapons or in chemotherapy

(organic chemistry, pharmacology) any of a class of heterocyclic compounds used as tranquilizers and sedatives