reversal

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

     n 1: a change from one state to the opposite state; "there was a
          reversal of autonomic function"
     2: an unfortunate happening that hinders of impedes; something
        that is thwarting or frustrating [syn: reverse, setback,
         blow]
     3: turning in an opposite direction or position; "the reversal
        of the image in the lens" [syn: turn around]
     4: a decision to reverse an earlier decision [syn: {change of
        mind}, flip-flop, turnabout, turnaround]
     5: a judgment by a higher court that the judgment of a lower
        court was incorrect and should be set aside [ant: affirmation]
     6: turning in the opposite direction [syn: reversion, reverse,
         turnabout, turnaround]
     7: act of reversing the order or place of [syn: transposition]
     8: a reversal in attitude or principle or point of view: "an
        about-face on foreign policy" [syn: about-face, volte-face,
         policy change]