Definition of decommission verb from the Oxford Advanced Learner's Dictionary

 

decommission

 verb
verb
BrE BrE//ˌdiːkəˈmɪʃn//
 
; NAmE NAmE//ˌdiːkəˈmɪʃn//
 
Verb Forms present simple I / you / we / they decommission
BrE BrE//ˌdiːkəˈmɪʃn//
 
; NAmE NAmE//ˌdiːkəˈmɪʃn//
 
he / she / it decommissions
BrE BrE//ˌdiːkəˈmɪʃnz//
 
; NAmE NAmE//ˌdiːkəˈmɪʃnz//
 
past simple decommissioned
BrE BrE//ˌdiːkəˈmɪʃnd//
 
; NAmE NAmE//ˌdiːkəˈmɪʃnd//
 
past participle decommissioned
BrE BrE//ˌdiːkəˈmɪʃnd//
 
; NAmE NAmE//ˌdiːkəˈmɪʃnd//
 
-ing form decommissioning
BrE BrE//ˌdiːkəˈmɪʃnɪŋ//
 
; NAmE NAmE//ˌdiːkəˈmɪʃnɪŋ//
 
 
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decommission something to officially stop using weapons, a nuclear power station, etc.
See the Oxford Advanced American Dictionary entry: decommission