IPA: /əˈkʌrəns/
KK: /əˈkɜr.əns/
An event or situation that happens or takes place.
The occurrence of the solar eclipse attracted many spectators.
Occurrence → It is formed from "oc-" (a variant of "ob-", meaning against or toward) and "currere" (meaning to run). The word "occurrence" refers to something that runs or happens against or in the course of time.
Think of something that 'runs' ('currere') in the course of time, which helps you remember that an occurrence is an event that happens.