Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
sonorously is an adverb meaning "in a sonorous manner". It carries one recorded sense.
in a sonorous manner
“the congregation consisted chiefly of a few young folk, who snored sonorously”
Definitions, synonyms and semantic relations for sonorously come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .