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English definition of “coincidence”

coincidence

noun [C, U]     /kəʊˈɪnsɪdəns/
B2 a situation in which two very similar things happen at the same time but there is no reason for it: an amazing/strange coincidence It was pure coincidence that we both married dentists.Good luck and bad luckEvents and occurrencesAccidents and disasters
coincidental     /kəʊˌɪnsɪˈdentəl/ adjective happening by coincidence: The similarities are coincidental.Occurring and happening coincidentally     /kəʊˌɪnsɪˈdentəli/ adverb
(Definition of coincidence noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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