Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
advantageously is an adverb meaning "in a manner affording benefit or advantage". It carries one recorded sense.
in a manner affording benefit or advantage
“she married well”
“The children were settled advantageously in Seattle”
Definitions, synonyms and semantic relations for advantageously come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.