( formal ) to find or meet sb/sth unexpectedly or by chance :
One day he chanced upon Emma's diary and began reading it.
( formal ) to find or meet sb/sth unexpectedly or by chance :
One day he chanced upon Emma's diary and began reading it.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005