Definition of into thin air
- My keys seem to have vanished/disappeared into thin air.
: having little extent from one surface to its opposite
: measuring little in cross section or diameter
: not dense in arrangement or distribution
: to make thin or thinner:
: to reduce in thickness or depth : attenuate
: to make less dense or viscous
: in a thin manner : thinly
: the mixture of invisible odorless tasteless gases (such as nitrogen and oxygen) that surrounds the earth
: a light breeze
: to expose to the air for drying, purifying, or refreshing : ventilate
: to expose to public view or bring to public notice
: to transmit by radio or television
What made you want to look up into thin air? Please tell us where you read or heard it (including the quote, if possible).