wrap around

from Jargon File (4.4.4, 14 Aug 2003)
wrap around
 vi.

   (also n. wraparound and v. shorthand wrap)

   1. [techspeak] The action of a counter that starts over at zero or at
   minus infinity (see {infinity}) after its maximum value has been
   reached, and continues incrementing, either because it is programmed
   to do so or because of an overflow (as when a car's odometer starts
   over at 0).

   2. To change {phase} gradually and continuously by maintaining a
   steady wake-sleep cycle somewhat longer than 24 hours, e.g., living
   six long (28-hour) days in a week (or, equivalently, sleeping at the
   rate of 10 microhertz). This sense is also called {phase-wrapping}.
    
from The Free On-line Dictionary of Computing (8 July 2008)
wrap around

   (Or "wraparound", "wrap") The action of a counter that starts
   again at zero or at "minus infinity" (see {infinity}) after
   its maximum value has been reached, and continues
   incrementing, either because it is programmed to do so or
   because of an overflow (as when a car's odometer starts again
   at 0).

   [{Jargon File}]
    

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