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deactivate

[dee-ak-tuh-veyt] /diˈæk təˌveɪt/
verb (used with object), deactivated, deactivating.
1.
to cause to be inactive; remove the effectiveness of.
2.
to demobilize or disband (a military unit).
3.
to render (a bomb, shell, or the like) inoperative, especially by disconnecting, removing, or otherwise interfering with the action of the fuze.
4.
Chemistry. to render (a chemical, enzyme, catalyst, etc.) inactive.
verb (used without object), deactivated, deactivating.
5.
Physical Chemistry. to lose radioactivity.
Origin
1900-1905
1900-05; de- + activate
Related forms
deactivation, noun
deactivator, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for deactivated
  • The row line is then deactivated and the next row line is activated.
British Dictionary definitions for deactivated

deactivate

/diːˈæktɪˌveɪt/
verb
1.
(transitive) to make (a bomb, etc) harmless or inoperative
2.
(intransitive) to become less radioactive
3.
(transitive) (US) to end the active status of (a military unit)
4.
(chem) to return or cause to return from an activated state to a normal or ground state
Derived Forms
deactivation, noun
deactivator, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for deactivated

deactivate

v.

1904, from de- + activate. Related: Deactivated; deactivating; deactivation.

Online Etymology Dictionary, © 2010 Douglas Harper
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