verb (used with object), sensitized, sensitizing.
to render sensitive.
Photography. to render (a film or the like) sensitive to light or other forms of radiant energy.
Immunology. to render sensitive to an antigenic substance.
verb (used without object), sensitized, sensitizing.
to become sensitized.
Also, especially British, sensitise.

1855–60; sensit(ive) + -ize

sensitizer, noun
antisensitizer, noun
antisensitizing, adjective
nonsensitized, adjective
nonsensitizing, adjective
oversensitize, verb, oversensitized, oversensitizing.
resensitize, verb (used with object), resensitized, resensitizing.
unsensitize, verb (used with object), unsensitized, unsensitizing. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
sensitize or sensitise (ˈsɛnsɪˌtaɪz)
1.  to make or become sensitive
2.  (tr) to render (an individual) sensitive to a drug, allergen, etc
3.  (tr) photog to make (a material) sensitive to light or to other actinic radiation, esp to light of a particular colour, by coating it with a photographic emulsion often containing special chemicals, such as dyes
sensitise or sensitise
sensiti'zation or sensitise
sensiti'sation or sensitise
'sensitizer or sensitise
'sensitiser or sensitise

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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American Heritage
Medical Dictionary

sensitize sen·si·tize (sěn'sĭ-tīz')
v. sen·si·tized, sen·si·tiz·ing, sen·si·tiz·es
To make hypersensitive or reactive to an antigen, such as pollen, especially by repeated exposure.

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
So he learned about poverty and was sensitized to it.
Their entire life is sensitized for poetic reverie, for a reverie which knows the price of solitude.
We were sensitized to the fact that stem cells were going to be touchy territory.
Our driving will become sensitized to fake images and eventually real life tragedy will occur.
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