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English definition of “light on/upon sth”

light on/upon sth

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