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air-cool

transitive verb

: to cool by means of air
specifically : to cool the cylinder or cylinders of (an internal-combustion engine) by air without the use of any intermediate medium (as water or oil)
air-cooled adjective
air cooling noun

Word History

Etymology

back-formation from air-cooled & air cooling

First Known Use

1900, in the meaning defined above

Time Traveler
The first known use of air-cool was in 1900

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