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[foh-tuh-sen-si-tahyz] /ˌfoʊ təˈsɛn sɪˌtaɪz/
verb (used with object), photosensitized, photosensitizing.
to make (a material) photosensitive, as by the application of a photosensitive emulsion.
Also, especially British, photosensitise.
1920-25; photosensit(ive) + -ize
Related forms
photosensitization, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for photosensitization


(transitive) to make (an organism or substance) photosensitive
Derived Forms
photosensitization, photosensitisation, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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photosensitization in Medicine

photosensitization pho·to·sen·si·ti·za·tion (fō'tō-sěn'sĭ-tĭ-zā'shən)
The act or process of inducing photosensitivity.

photosensitize pho·to·sen·si·tize (fō'tō-sěn'sĭ-tīz')
v. pho·to·sen·si·tized, pho·to·sen·si·tiz·ing, pho·to·sen·si·tiz·es
To make an organism, a cell, or a substance photosensitive.

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

the process of initiating a reaction through the use of a substance capable of absorbing light and transferring the energy to the desired reactants. The technique is commonly employed in photochemical work, particularly for reactions requiring light sources of certain wavelengths that are not readily available. A commonly used sensitizer is mercury, which absorbs radiation at 1849 and 2537 angstroms; these are the wavelengths of light produced in high-intensity mercury lamps. Also used as sensitizers are cadmium; some of the noble gases, particularly xenon; zinc; benzophenone; and a large number of organic dyes.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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