'deactivation' definitions:
Definition of 'deactivation'
From: WordNet
noun
Breaking up a military unit (by transfers or discharges) [syn: deactivation, inactivation]
noun
The act of deactivating or making ineffective (as a bomb) [syn: deactivation, defusing] [ant: activation]
Definition of 'deactivation'
From: GCIDE
- deactivation \de*ac`ti*va"tion\, n. The act or process of deactivating. [PJC]