Definition of on the air
- The interview will be on the air tomorrow.
- an interview being shown on air
: 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 on the air? Please tell us where you read or heard it (including the quote, if possible).