Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A complete shift, as from one system to another.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A complete change or switch from one state, system or course of action to another
  • n. A change to the use of a second system (of power etc) in the event of the failure of a main system

Etymologies

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Examples

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  • "Drivers in Samoa in the South Pacific are preparing to switch from driving on the right side of the road to the left after a rule change by the government.
    ...
    The switchover is due to start at 0550 on Monday (1650GMT), when radio messages will broadcast telling drivers to stop and to prepare to overturn 100 years of motoring tradition."
    - Nick Bryant, Samoan cars ready to switch sides, bbc.co.uk, 7 Sep 2009.

    September 7, 2009