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Dictionary

u•ru•shi•ol

Pronunciation: (oo-rOO'shē-ôl", -ol"), [key]
—n.
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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