Source : Webster's Revised Unabridged Dictionary (1913)

Emasculation \E*mas`cu*la"tion\, n.
   1. The act of depriving of virility, or the state of being so
      deprived; castration.

   2. The act of depriving, or state of being deprived, of vigor
      or strength; unmanly weakness.

Source : WordNet®

emasculation
     n 1: loss of power and masculinity
     2: neutering a male animal by removing the testicles [syn: {castration}]