in·ac·ti·vate

[in-ak-tuh-veyt]
verb (used with object), in·ac·ti·vat·ed, in·ac·ti·vat·ing.
1.
to make inactive: The bomb was inactivated.
2.
Immunology. to stop the activity of (certain biological substances).

Origin:
1905–10; inactive + -ate1

in·ac·ti·va·tion, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
inactivate (ɪnˈæktɪˌveɪt) [Click for IPA pronunciation guide]
 
vb
(tr) to render inactive
 
inacti'vation
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Inactivate is always a great word to know.
So is bezoar. Does it mean:
a gadget; dingus; thingumbob.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
American Heritage
Medical Dictionary

inactivate in·ac·ti·vate (ĭn-āk'tə-vāt')
v. in·ac·ti·vat·ed, in·ac·ti·vat·ing, in·ac·ti·vates

  1. To render nonfunctional.

  2. To make quiescent.


in·ac'ti·va'tion n.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
If a sole owner ceases to do business, the owner may wish to cancel or
  inactivate the license.
The researchers tried again, but used a short-lived protein switch to
  inactivate the genes.
Scientists purify and inactivate the harvested protein so that it can stimulate
  an immune response without causing an infection.
Others generate powerful enzymes that inactivate the drugs.
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