Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
co-occurrence is a noun meaning "an event or situation that happens at the same time as or in connection with another". It carries 2 recorded senses.
an event or situation that happens at the same time as or in connection with another
the temporal property of two things happening at the same time
“the interval determining the coincidence gate is adjustable”
Definitions, synonyms and semantic relations for co-occurrence come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.