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[dee-sen-si-tuh-zey-shuh n] /diˌsɛn sɪ təˈzeɪ ʃən/
the act or process of desensitizing.
Physiology, Medicine/Medical. the elimination or reduction of natural or acquired reactivity or sensitivity to an external stimulus, as an allergen.
Psychiatry. a behavior modification technique, used especially in treating phobias, in which panic or other undesirable emotional response to a given stimulus is reduced or extinguished, especially by repeated exposure to that stimulus.
Origin of desensitization
First recorded in 1920-25; desensitize + -ation Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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desensitization in Medicine

desensitization de·sen·si·ti·za·tion (dē-sěn'sĭ-tĭ-zā'shən)

  1. The reduction or abolition of allergic sensitivity or reactions to a specific allergen. Also called antianaphylaxis.

  2. The mitigation of an individual's emotional response to a distressing stimulus by repeated exposure to or imagination of that stimulus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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