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idiosyncrasy

idiosyncrasy definition - medical

id·i·o·syn·cra·sy (ĭdˌē-ō-sĭngˈkrə-sē)

noun

A structural or behavioral trait peculiar to an individual or a group.
A physiological or temperamental peculiarity.
An unusual individual reaction to food or a drug.

Related Forms:

idˌi·o·syn·cratˈic (-sĭn-krătˈĭk) adjective

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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