Definition of "round trip"

round trip

noun
plural round trips
1. (often figurative, travel) A trip from one destination to another and then returning to the starting location.
  Quotations
  The fare for this sightseeing tour of London is about 1s., but it is necessary to rebook at least once, as through tickets are not issued for the round trip.
  1950 July, J. G. Gibbons, “Sightseeing on the Inner Circle”, in Railway Magazine, page 485
2. In an oil-drilling operation, the raising, disassembly and replacement of the drilling equipment.
  Quotations
  As drilling progresses, the bit gets more and more worn, till eventually it has to be replaced. In order for the bit to be replaced, the whole string has to be lugged up to the surface and taken apart section by section. Once done, the string can be put back together and the bit lowered to the well once again. This operation, called a round trip, takes most drilling crews 12 hours to complete.
  2014, Exploring Tech Careers: Fourth Edition (page 632), Ferguson Publishing
3. (finance) A form of barter that involves the sale of an unused asset and the purchase of the same asset back again, or a similar one, typically used in accounting fraud.
4. (finance) The investment of a borrowed overdraft in order to make a profit in the same market.
5. (computing) The export and eventual reimport of a file, data, etc. without loss of fidelity.