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Definition of balloonism in English:

balloonism

Pronunciation /bəˈluːnɪz(ə)m/

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.