gas turbine

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun An internal-combustion engine consisting essentially of an air compressor, combustion chamber, and turbine wheel that is turned by the expanding products of combustion.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An internal combustion engine consisting of a compressor, a combustion chamber and a turbine, where the turbine mechanically powers the compressor.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun turbine that converts the chemical energy of a liquid fuel into mechanical energy by internal combustion; gaseous products of the fuel (which is burned in compressed air) are expanded through a turbine