Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
fortuity is a noun meaning "anything that happens suddenly or by chance without an apparent cause". It carries one recorded sense.
anything that happens suddenly or by chance without an apparent cause
“winning the lottery was a happy accident”
“the pregnancy was a stroke of bad luck”
“it was due to an accident or fortuity”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for fortuity come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.