reversion


reversion (http://definr.com/reversion)

     n 1: (law) an interest in an estate that reverts to the grantor
          (or his heirs) at the end of some period (e.g., the
          death of the grantee)
     2: a reappearance of an earlier characteristic [syn: atavism,
         throwback]
     3: turning in the opposite direction [syn: reverse, reversal,
         turnabout, turnaround]
     4: returning to a former state [syn: regression, regress, retrogression,
         retroversion]
     5: a failure to maintain a higher state [syn: backsliding, lapse,
         lapsing, recidivism, relapse, relapsing, reverting]