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urushiol: Meaning and Definition of

u•ru•shi•ol

Pronunciation: (oo-r'shē-ôl", -ol"), [key]
— n.
  1. a toxic, liquid, catechol derivative, the active irritant principle in several species of the plant genus Rhus, as in poison ivy.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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