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English definition of “dilate on/upon sth”

dilate on/upon sth

formal phrasal verb with dilate     /daɪˈleɪt/ US  /ˈdaɪ.leɪt/ verb [I or T]
to write or speak about a subject for a long time : He likes to dilate upon what he thinks is wrong with the world .Elaborating, specifying and simplifying
(Definition of dilate on/upon sth from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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