Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
megalomaniacal is an adjective meaning "suffering from megalomania". It carries one recorded sense.
suffering from megalomania
Definitions, synonyms and semantic relations for megalomaniacal come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.