combustion chamber

American  

noun

Machinery.

1. a chamber, as in an engine or boiler, where combustion occurs.

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combustion chamber British  

noun

1. an enclosed space in which combustion takes place, such as the space above the piston in the cylinder head of an internal-combustion engine or the chambers in a gas turbine or rocket engine in which fuel and oxidant burn

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combustion chamber Scientific  

1. An enclosure in which combustion, especially of a fuel or propellant, is initiated and controlled.

2. See also internal-combustion engine

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Etymology

Origin of combustion chamber

First recorded in 1850–55

Example Sentences

See Examples For:

combustion chamber

However, during engine operation, moving parts such as pistons require constant lubrication, making it unavoidable that small amounts of engine oil enter the combustion chamber.

From Science Daily ● May 13, 2026

The piston’s down position allows exhaust to escape and the combustion chamber to refill with fuel and air.

From The Wall Street Journal ● Apr. 24, 2026

According to the report, the engine can slow the intake of air to less than the speed of sound prior to entering the combustion chamber.

From Washington Times ● Feb. 22, 2023

“It’s a combustion chamber of trauma — that’s what Memphis is,” said Mr. Franklin, 36.

From New York Times ● Feb. 3, 2023

The supply of oil should be reduced and the draught regulated until the flame in the combustion chamber burns clear.

From Pottery, for Artists Craftsmen & Teachers by Cox, George J.