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occur

 
 
/əˈkɜːr/ verb [I] (present participle occurring, past tense and past participle occurred)

Definition

formal to happen, often without being planned: According to the police, the shooting occurred at about 12.30 a.m.
occur in/among, etc sth/sb to exist or be present in a particular place or group of people: Minerals occur naturally in the Earth's crust. The disease mainly occurs in women over 40.
(Definition of occur verb from the Cambridge Learner's Dictionary © Cambridge University Press)

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