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deactivation

 - 3 dictionary results

de⋅ac⋅ti⋅vate

  [dee-ak-tuh-veyt] verb, -vat⋅ed, -vat⋅ing.
Use deactivation in a Sentence
–verb (used with object)
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, esp. 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)
5. Physical Chemistry. to lose radioactivity.
Origin:
1900–05; de- + activate

Related forms:
de⋅ac⋅ti⋅va⋅tion, noun
de⋅ac⋅ti⋅va⋅tor, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To deactivation
de·ac·ti·vate   (dē-āk'tə-vāt')   
tr.v.   de·ac·ti·vat·ed, de·ac·ti·vat·ing, de·ac·ti·vates

  1. To render inactive or ineffective.

  2. To inhibit, block, or disrupt the action of (an enzyme or other biological agent).

  3. To remove from active military status.

de·ac'ti·va'tion n., de·ac'ti·va'tor n.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: de·ac·ti·vate
Pronunciation: (')dE-'ak-t&-"vAt
Function: transitive verb
Inflected Forms: -vat·ed;-vat·ing
1 : to make inactive or ineffective
2 : to deprive of chemical activity <deactivate an enzyme> —de·ac·ti·va·tion /-"ak-t&-'vA-sh&n/ noun
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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