Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
montgolfier is a noun meaning "French inventor who (with his brother Josef Michel Montgolfier) pioneered hot-air ballooning (1745-1799)". It carries 2 recorded senses.
French inventor who (with his brother Josef Michel Montgolfier) pioneered hot-air ballooning (1745-1799)
French inventor who (with his brother Jacques Etienne Montgolfier) pioneered hot-air ballooning (1740-1810)
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for montgolfier come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.