Syllable division and stress derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
XCVIII is the Roman numeral for 98. WordNet records it as an adjective meaning "being eight more than ninety". It carries one recorded sense.
XCVIII=98
Read from the numeral itself, and checked against the entry below — WordNet lists 98 among the synonyms of xcviii.
Convert any Roman numeralbeing eight more than ninety
Definitions, synonyms and semantic relations for xcviii come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.