SYN: desensitization.
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hy·po·sen·si·ti·za·tion or chiefly Brit hy·po·sen·si·ti·sa·tion -.sen(t)-sət-ə-'zā-shən, -.sen(t)-stə-'zā- n the state or process of being reduced in sensitivity esp. to an allergen: DESENSITIZATION
hy·po·sen·si·tize or chiefly Brit hy·po·sen·si·tise -'sen(t)-sə-.tīz vt, -tized or chiefly Brit -tised; -tiz·ing or chiefly Brit -tis·ing
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n.
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hy·po·sen·si·ti·za·tion (hi″po-sen″sĭ-tĭ-zaґshən) desensitization.Medical dictionary. 2011.