Pronunciation: /ɪnsɪˈdɛnt(ə)li/
adverb
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1 [sentence adverb] used to add a further comment or a remark unconnected to the current subject; by the way: incidentally, it was many months before the whole truth was discovered
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2in an incidental manner; as a chance occurrence: the infection was discovered only incidentally at post-mortem examination
