urushiol
uru·shi·ol
noun \yu̇-ˈrü-shē-ˌȯl, u̇-ˈ, -ˌōl\Definition of URUSHIOL
: a mixture of catechol derivatives with saturated or unsaturated side chains of 15 or 17 carbon atoms that is an oily toxic irritant principle present in poison ivy and some related plants (genus Rhus) and in lacquers derived from such plants
Origin of URUSHIOL
International Scientific Vocabulary, from Japanese urushi lacquer + International Scientific Vocabulary 1-ol
First Known Use: 1908
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