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English definition of “round trip”

round trip

noun [C]  /ˈrɑʊnd ˈtrɪp/ us  
a trip from one place to another and back to where you started: I drive 45 miles round trip every day for work.
adjective [not gradable]
I’d like a round-trip ticket to Baltimore, please.
(Definition of round trip from the Cambridge Academic Content Dictionary © Cambridge University Press)
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