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1. Highly or excessively sensitive.
2. Responding excessively to the stimulus of a foreign agent, such as an allergen.
hy′per·sen′si·tive·ness, hy′per·sen′si·tiv′i·ty n.
hy′per·sen′si·tize′ (-tīz′) v.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Photography) (tr) to treat (a photographic emulsion), usually after manufacture and shortly before exposure, to increase its speed
ˌhyperˌsensitiˈzation, ˌhyperˌsensitiˈsation n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Past participle: hypersensitized
Collins English Verb Tables © HarperCollins Publishers 2011