What does deflagrator mean?
A deflagrator is a technical term for a device or substance used to initiate a deflagration, a form of rapid combustion in which gases expand suddenly. The word is most often encountered in chemistry, pyrotechnics, explosives testing, and industrial safety, where controlled combustion is needed or where a substance must reliably trigger a burning reaction. A physical deflagrator may be an apparatus, while a chemical deflagrator acts as the initiating material. In ordinary speech, the term is uncommon and sounds more specialized than “igniter,” which is broader and can refer to anything that starts a flame. It should not be confused with “detonator,” a device intended to produce a detonation marked by a shock wave, or with “deflagration,” which names the combustion process rather than the device or substance causing it. Knowing “deflagrator” helps distinguish rapid, expanding combustion from an explosive shock and makes technical descriptions more exact.
nounA device or substance that causes or initiates a deflagration, a rapid combustion accompanied by a sudden expansion of gases.
- A device designed to cause or initiate a deflagration.
- A substance or chemical compound used to initiate a deflagration.
"The technician checked the deflagrator before beginning the controlled burn."
"The technician checked the deflagrator before beginning the controlled burn."
"The dry mixture included a deflagrator that would initiate the reaction."
The plural of deflagrator, used for multiple devices or substances that initiate deflagration.
"The laboratory replaced all of the deflagrators before the next test."
A deflagrator starts a rapid burn—not the shock-wave blast of a detonator.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does deflagrator come from?
The English noun was formed from deflagrate and the agentive suffix -or, indicating something that causes or performs deflagration. Deflagrate comes from Latin deflagrare, “to burn down,” formed from de-, meaning “down,” and flagrare, meaning “to burn.” Close English relatives include deflagration and deflagrable.
Related word forms
How deflagrator is actually used
This is a specialized term used in chemistry, pyrotechnics, explosives testing, and industrial safety. It is uncommon in general speech, where igniter may be used more broadly.
Easily confused with deflagrator
A deflagrator initiates rapid combustion with expanding gases, whereas a detonator produces a detonation involving a shock wave.
A deflagrator is the device or substance that causes a deflagration; a deflagration is the combustion process itself.