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urushiolenUK
u·ru·shi·ol U0153800 (o͝o-ro͞o′shē-ôl′, -ōl′, -ŏl′)n. An oily, toxic substance composed of phenolic compounds that is present in the sap of various plants of the family Anacardiaceae and especially the genus Toxicodendron, including poison ivy, poison sumac, and the lacquer tree.
[Japanese urushi, lacquer + -ol.]urushiol (ˈuːrʊʃɪˌɒl; uːˈruː-) n (Elements & Compounds) a poisonous pale yellow liquid occurring in poison ivy and the lacquer tree[from Japanese urushi lacquer + -ol2]u•ru•shi•ol (ʊˈru ʃiˌɔl, -ˌɒl)
n. a catechol derivative that is the irritant in poison ivy and its allies. [1910–15; < Japanese urushi lacquer] urushiolenUK
urushiol [u-roo´she-ol] the toxic irritant principle of poison ivy and related plants.u·ru·shi·ol (ū-rū'shē-ōl), A mixture of nonvolatile hydrocarbons, derivatives of catechol with unsaturated C15 or C17 side chains, constituting the active allergen of the irritant oil of poison ivy, Toxicodendron radicans, poison oak, T. diversilobum, and the Asiatic laquer tree, T. verniciferum. [Jap. urushi, lac, + L. oleum, oil] urushiol (o͝o-ro͞o′shē-ôl′, -ōl′, -ŏl′)n. A toxic substance composed of catechol derivatives that is present in the sap of various plants of the family Anacardiaceae and especially the genus Toxicodendron, including poison ivy, poison sumac, and the lacquer tree, from which a durable lacquer is obtained.ur·u·shi·ol (ū-rū'shē-ōl) A mixture of nonvolatile hydrocarbons, constituting the active allergen of the irritant oil of poison ivy, Toxicodendron radicans, poison oak, T. diversilobum, and the Asiatic laquer tree, T. verniciferum. [Jap. urushi, lac, + L. oleum, oil] |