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English definition of “light on/upon sth”

light on/upon sth

formal phrasal verb with light     /laɪt/ verb (lit or lighted, lit or lighted)
to find or think of something unexpectedly: We lighted upon the solution entirely by accident.Finding and discovering
(Definition of light on/upon sth from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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