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urushiol

   Also found in: Medical, Wikipedia 0.01 sec.
u·ru·shi·ol  (-rsh-ôl, -l, -l)
n.
A toxic substance present in the resin or on the surface of plants of the genus Rhus, including poison ivy and the lacquer tree, from which a black Japanese lacquer is obtained.

[Japanese urushi, lacquer + -ol.]

urushiol [ˈuːrʊʃɪˌɒl uːˈruː-]
n
(Chemistry / Elements & Compounds) a poisonous pale yellow liquid occurring in poison ivy and the lacquer tree
[from Japanese urushi lacquer + -ol2]

urushiol  (-rsh-ôl, -l)
A toxic substance present in the resin or on the surface of plants of the genus Rhus (syn. Toxicodendron). Urushiol is a mixture of several derivatives of catechol and is the irritating substance in poison ivy.


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The list of putative treatments for Toxicodendron dermatitis is as extensive as human imagination, and not a single one actually cures the underlying problem -- that is, the allergic reaction to urushiol.
Poison plant rashes can't be spread from person to person, but it's possible to pick up a rash from urushiol that sticks to clothing, tools, balls and pets.
Many people are allergic to Poison Ivy due to the presence of urushiol - a skin irritant.
 
 
 
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