Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: deactivation  dee,ak-ti'vey-shun
  1. (military) breaking up a military unit (by transfers or discharges)
    - inactivation
  2. The act of deactivating or making ineffective (as a bomb)
    - defusing

Derived forms: deactivations

Type of: chuck [Brit, informal], conclusion, discharge, dismissal, dismission, ending, firing, heave-ho [informal], liberation, release, sack, sacking, severance, termination, the axe [informal], the boot [informal], the chop [Brit, informal]

Antonym: activation

Encyclopedia: Deactivation