combustor

[kuhm-buhs-ter]
noun Aeronautics.
the apparatus in a ramjet or other jet engine for initiating and sustaining combustion, consisting of the igniter, fuel-injection system, combustion chamber, and flameholder.

Origin:
1940–45; combust(ion) + -or2

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World English Dictionary
combustor (kəmˈbʌstə)
 
n
the combustion system of a jet engine or ramjet, comprising the combustion chamber, the fuel injection apparatus, and the igniter

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Example sentences
In such a design, heat spreads in all directions from a combustor at the
  center, facilitating the necessary reactions.
The combustor geometry is divided into two zones to facilitate better
  visualization of the cavity flame during operation.
Gas turbines are essentially composed of three major components: compressor,
  combustor, and power turbine.
There are two types of wood burning stoves: catalytic combustor and
  noncatalytic.
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