WordReference Random House Learner's Dictionary of American English © 2017
in•ac•ti•vate /ɪnˈæktəˌveɪt/USA pronunciation   v. [+ object], -vat•ed, -vat•ing. 
  1. to make inactive.
in•ac•ti•va•tion /ɪnˌæktəˈveɪʃən/USA pronunciation  n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2017
in•ac•ti•vate  (in aktə vāt′),USA pronunciation v.t.,  -vat•ed, -vat•ing. 
  1. to make inactive:The bomb was inactivated.
  2. [Immunol.]to stop the activity of (certain biological substances).
in•ac′ti•vation, n. 
  • inactive + -ate1 1905–10


Collins Concise English Dictionary © HarperCollins Publishers::

inactivate /ɪnˈæktɪˌveɪt/ vb
  1. (transitive) to render inactive

inˌactiˈvation n



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