/ əˈkɜː(r); NAmE / verb ( -rr- )
1.
[ v ] ( formal ) to happen :
When exactly did the incident occur?
Something unexpected occurred.
2.
[ v + adv. / prep. ] to exist or be found somewhere :
Sugar occurs naturally in fruit.
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PHRASAL VERBS
- occur to sb
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WORD ORIGIN
late 15th cent.: from Latin occurrere go to meet, present itself, from ob- against + currere to run.