Definition of balloonism in English:

balloonism

noun

rare
  • The system, theory, or practice of ballooning.

Origin

Late 18th century; earliest use found in Horace Walpole (1717–1797), author, politician, and patron of the arts. From balloon + -ism. Compare balloonation, ballooning, balloonery.

Pronunciation

balloonism

/bəˈluːnɪz(ə)m/