1. French inventor who (with his brother Josef Michel Montgolfier) pioneered hot-air ballooning (1745-1799) • Syn: Jacques Etienne Montgolfier • Instance Hypernyms: balloonist 2. French inventor who (with his brother Jacques Etienne Montgolfier) pioneered hot-air ballooning (1740-1810) • Syn: Josef Michel Montgolfier • Instance Hypernyms: balloonist