[1] : The Collaborative International Dictionary of English v.0.48

postponement \postpone"ment\, n.
   the act of postponing; a deferring, or putting off, to a
   future time; a temporary delay. --macaulay.
   1913 webster

[2] : WordNet (r) 2.0

postponement
     n 1: time during which some action is awaited; "instant replay
          caused too long a delay"; "he ordered a hold in the
          action" syn: delay, hold, time lag, wait
     2: act of putting off to a future time syn: deferment, deferral
see also:
delay hold time lag wait deferment deferral 

Postponement >> P Words
Postponement, definition of term: Postponement
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