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

activation \activation\ n.
   1. the process of making active.

   syn: energizing, activating
        wordnet 1.5

   2. making active and effective as a bomb.
      1913 webster

   note: certain devices, as bombs or artillery shells, are
         designed to be unable to operate until a specific
         action activation or arming is taken to make them
         operable.
         wordnet 1.5

[2] : WordNet (r) 2.0

activation
     n 1: stimulation of activity in an organism or chemical ant: inactivation
     2: the activity of causing to have energy and be active syn: energizing,
         activating
     3: making active and effective as a bomb ant: deactivation
see also:
inactivation energizing activating deactivation 

Activation >> A Words
Activation, definition of term: Activation
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Activation Ener >> A Words
Activation Ener, definition of term: Activation Ener
activation+ener_pag1.html