ballooning
nounUK /bəˈluːnɪŋ/
US /bəˈluːnɪŋ/
The activity of flying in a big balloon filled with hot air.
We watched the ballooning festival from the hill as colorful balloons rose into the sky.
OTHER MEANINGS
2. The act of swelling or expanding like a balloon.
The ballooning of the fabric made the dress look puffy.
3. A sudden rapid increase in size or amount.
The ballooning cost of the project worried the town council.
4. The process of inflating something with air or gas.
Ballooning the tires took only a few minutes at the station.