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

completion \comple"tion\, n. l. completio a filling, a
   fulfillment.
   1. the act or process of making complete; the getting through
      to the end; as, the completion of an undertaking, an
      education, a service.
      1913 webster

            the completion of some repairs.       --prescott.
      1913 webster

   2. state of being complete; fulfillment; accomplishment;
      realization.
      1913 webster

            predictions receiving their completion in christ.
                                                  --south.
      1913 webster

[2] : WordNet (r) 2.0

completion
     n 1: american football a successful forward pass in football
          syn: pass completion
     2: a concluding action syn: culmination, closing, windup,
         mop up
see also:
pass completion culmination closing windup mop up 

[3] : Moby Thesaurus II by Grady Ward, 1.0

53 moby thesaurus words for "completion":
   accomplishment, achievement, administration, bitter end,
   carrying out, catastrophe, climax, close, closure, commission,
   completing, conclusion, conduct, consummation, culmination,
   denouement, discharge, dispatch, effectuation, enactment, end,
   end result, ending, enforcement, execution, final result, finale,
   finish, finishing, fulfillment, full development, handling,
   implementation, last act, management, maturation, maturity,
   observance, payoff, perfection, performance, perpetration,
   prosecution, realization, ripeness, rounding off, rounding out,
   termination, terminus, topping off, topping-off, transaction,
   windup

Completion >> C Words
Completion, definition of term: Completion
completion_pag1.html