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English definition of “occur”

occur

verb [I] (HAPPEN)    /əˈkɜːr/ US  /-ˈkɝː/ (-rr-)
B2 (especially of accidents and other unexpected events) to happen: An accident involving over ten vehicles has occurred in the east-bound lane. If any of these symptoms occur while you are taking the medicine, consult your doctor immediately.Occurring and happening
(Definition of occur verb (HAPPEN) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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