Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
propitiously is an adverb meaning "in an auspicious manner". It carries one recorded sense.
in an auspicious manner
“he started his new job auspiciously on his birthday”
Definitions, synonyms and semantic relations for propitiously come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.