1. energy of activation the energy that an atomic system must acquire before a process (such as an emission or reaction) can occur
  2. inactivation the process of rendering inactive
  3. innovation the act of starting something for the first time
  4. enervation lack of vitality
  5. activation causing something to take effect or to have energy
  6. equivocation intentional vagueness or ambiguity
  7. affectation a deliberate pretense or exaggerated display
  8. effectuation the act of implementing ; carrying into effect
  9. water conservation the conservation of water resources
  10. deactivation breaking up a military unit (by transfers or discharges)
  11. innervation the neural or electrical arousal of an organ or muscle or gland
  12. effective producing or capable of producing an intended result
  13. ineffective not producing an intended consequence
  14. unsanctification unholiness by virtue of being profane
  15. preachification moralization delivered tediously in a preachy manner
  16. inertial navigation a method of controlling the flight of a missile by devices that respond to inertial forces
  17. objectification the act of representing an abstraction as a physical thing
  18. invective abusive language used to express blame or censure
  19. incurvation a shape that curves or bends inward
  20. provocative serving or tending to excite or stimulate