ballooning bal·loo·ning UK/bəˈluːnɪŋ/ US/bʌˈlunɪŋ/ uncommon noun 1. flying in a balloon Related words Broader terms flight WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.
