thin air meaning

• Noun: thin air
  1. Nowhere to be found in a giant void
     "it vanished into thin air"

  Type of: nihility, nothingness, nullity, void

• into thin air:    [American slang]ad ...
• disappear into thin air:    [American slang]v. ...
• out of thin air:    Adverb: out of thi ...

Examples

1. he seemed to vanish into thin air.
2. please . you don't think i'd go vaulting into thin air
3. ice rinks don't just appear out of thin air
4. nobody ever read, and it vanished into thin air
5. much of the railway is at altitudes with thin air