Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Nitrogen monoxide, also known as nitric oxide, is a colorless gas with the formula NO. It plays significant roles in several biological processes including neurotransmission and immune defense.
Related terms
Nitrogen Dioxide (NO2): A reddish-brown toxic gas that contributes to air pollution and acid rain.
Oxidation Reaction: A type of chemical reaction involving loss of electrons or increase in oxidation state by an atom, ion, or molecule.
The smallest particle in a chemical element or compound having the chemical properties of that element or compound; it consists of two or more atoms held together by covalent bonds.