verb (used without object), air-breathed [air-breethd] , air-breathing.
(of an engine, aircraft, missile, etc.) to take in air from the atmosphere to oxidize the fuel for combustion.

air1 + breathe Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To air-breathing's 21st Century Lexicon
Main Entry:  air-breathing
Part of Speech:  adj
Definition:  acquiring oxygen from the air
Example:  Tests have been completed on air-breathing rocket engines.'s 21st Century Lexicon
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