We use cookies to enhance your experience on our website. By continuing to use our website, you are agreeing to our use of cookies. You can change your cookie settings at any time. Find out more

Subscriber login

Library card login

Other

X Close menu

Dictionary Language resources

urushiol

Syllabification: (u·ru·shi·ol)

Pronunciation: /(y)o͝oˈro͞oSHēˌôl, -ˌōl, -ˌäl/

Definition of urushiol

noun

Biochemistry

an oily liquid that is the main constituent of Japanese lacquer and is responsible for the irritant properties of poison ivy and other plants. It consists of a mixture of catechol derivatives.