What does azide mean?
An azide is a chemical compound containing the azide group, a strikingly simple structure of three nitrogen atoms linked in a row and bonded to another element or molecular fragment. Written chemically as N3, the azide ion is linear and carries a negative charge, and it forms salts with metals — most famously sodium azide, which decomposes violently into nitrogen gas. This property gives azides two very different public roles: heavy-metal azides like lead azide are sensitive primary explosives used in detonators, while precisely controlled decomposition makes sodium azide the classic gas-generating agent in automotive airbags. Azide compounds are also staples of synthetic chemistry, particularly 'click' reactions that attach molecules together efficiently. Because many azides are both toxic and unstable, the word carries strong connotations of hazard and precision, appearing mainly in technical, laboratory, and industrial-safety contexts rather than everyday speech.
nounA chemical compound containing the azide group or anion, a chain of three nitrogen atoms (N3−) bonded to another element; also the univalent N3 group itself.
- Any chemical compound containing the univalent azide group (N3) bonded to an element or organic group.
- The azide ion itself, the linear three-nitrogen anion N3−.
"Sodium azide in airbags decomposes rapidly to release nitrogen gas on impact."
"Lead azide was widely used as a primary explosive in percussion caps and detonators."
"Researchers added an alkyl azide to the reaction mixture as a precursor for click chemistry."
Standard English plural; typically used when referring to the class of azide compounds as a whole.
"Organic azides are valuable intermediates in modern synthesis."
The same explosive salt that once detonated in early detonators now inflates every car airbag — sodium azide saves lives by exploding on cue.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of azide
The word 'azide' derives from 'azote', the French name for nitrogen coined by Antoine Lavoisier from Greek roots meaning 'lifeless', reflecting nitrogen's inertness. When chemists identified compounds containing the unusual three-nitrogen group in the nineteenth century, they named them after this parent term, forming 'azide' by analogy with related nitrogen-family names. It thus belongs to a family of chemistry words built on the same root, alongside 'azo' and 'diazo' compounds, all referring to structures rich in nitrogen.
How azide is actually used
Strictly technical vocabulary used almost exclusively in chemistry, laboratory, industrial, and safety contexts. In safety documentation, azides are flagged for their toxicity (sodium azide is highly poisonous) and, in the case of heavy-metal azides such as lead azide, their shock sensitivity. The plural 'azides' refers collectively to compounds of this class.
Easily confused with azide
An amide is a nitrogen-containing derivative of a carboxylic acid, whereas an azide is a compound of the three-nitrogen N3 group.