thin air en · NOUN
Pronunciation
- (Australia) audio
- /ˌθɪn ˈɛə(ɹ)/
Meanings
-
(figuratively, humorous, idiomatic, uncountable, usually) An unknown location; (by extension) apparent disappearance or nonexistence.
Where did you think the exhaust would go? Into thin air?
-
(uncountable) Used other than figuratively or idiomatically: see thin, air, (especially, low-density air as a result of high altitude).
You'll need to stay mindful of taking breaks, drinking water, and avoiding overexertion up here, because you're dealing with thin air at this altitude.
Relateds
out of thin air · dead air · out of the blue · oxygen mask · into thin air