variants:
or less commonly roundtrip
or round-trip
plural round trips also roundtrips or round-trips
Definition of round trip
: a trip to a place and back usually over the same route
It's a 25 mile round trip to work. an hour-long round trip by boat The lowest fare for the round trip is $1,694.18 including taxes and fees …— Helen Anders and James Barragan
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Merriam-Webster unabridged
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Time Traveler for round trip
The first known use of round trip was in 1837
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