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English definition of “expand on sth”

expand on sth

verb [I or T] uk phrasal verb with expand   /ɪkˈspænd/ us  
to give more details about something you have said or written: She mentioned a few ideas, but she didn't expand on them.Elaborating, specifying and simplifying
(Definition of expand on sth from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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