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U_______
Definitions
The oily compound in poison ivy, poison oak, and poison sumac that causes skin rash.
Word origin
From Japanese 漆 (うるし, urushi, “lacquer tree”) + -ol (“oil”).
Used in a sentence
“All three produce an oil, called urushiol, that is a potent allergen. Urushiol is most abundant in the leaves and stems of these plants...”
“Poison ivy vines also contain the irritating oil urushiol, so it is important to be able to recognize them in winter.”
“Upon exposure to air, urushiol can turn dark brown, which makes it easier to spot.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
No curated clues for urushiol yet.