Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
bacchanalian is an adjective meaning "used of riotously drunken merrymaking". It carries one recorded sense.
used of riotously drunken merrymaking
“a night of bacchanalian revelry”
“carousing bands of drunken soldiers”
“orgiastic festivity”
Definitions, synonyms and semantic relations for bacchanalian come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.