Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
viva-voce is an adjective meaning "expressed orally". It carries one recorded sense.
expressed orally
“a viva-voce report”
“the film had good word-of-mouth publicity”
Definitions, synonyms and semantic relations for viva-voce come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.