ballooning
noun
[ bəˈluːnɪŋ ]
• the sport or pastime of flying in a balloon.
• "he took up ballooning in 1907"
balloon
verb
• swell out in a spherical shape.
• "the trousers ballooned out below his waist"
Similar:
swell (out),
puff out/up,
bulge (out),
bag,
belly (out),
fill (out),
billow (out),
blow up,
inflate,
distend,
expand,
dilate,
• (with reference to a ball) lob or be lobbed high in the air.
• "the ball ballooned into the air"
• travel by hot-air balloon.
• "he is famous for ballooning across oceans"
Origin:
late 16th century (originally denoting a game played with a large inflated leather ball): from French ballon or Italian ballone ‘large ball’.