Definition of poison ivy in English English dictionary
A woody vine plant in the family Anacardiaceae well-known for its ability to produce urushiol, a skin irritant that causes an itching rash for most people
climbing plant found in North America (contains an irritating oil which often results in a rash when touched)
Poison ivy is a wild plant that grows in North America and that causes a rash or skin problems if you touch it. a North American plant that has an oily substance on its leaves that makes your skin hurt and itch if you touch it. Either of two North American species of white-fruited woody vines or shrubs of the sumac, or cashew, family. The species found in eastern North America (Toxicodendron radicans) is abundant; a western species, known as poison oak, is less common. Both species are sometimes classified as genus Rhus. A key identifier is leaves with three mitten-shaped leaflets. Contact with urushiol, an oil produced by the plant, can cause severe inflammation and blistering of human skin. Urushiol may be carried from the plant on clothing, shoes, tools, or soil; by animals; or by smoke from burning plants. Because urushiol is nonvolatile, a reaction may result from wearing clothing a year or more after its contact with the plant
climbing plant common in eastern and central United States with ternate leaves and greenish flowers followed by white berries; yields an irritating oil that causes a rash on contact dermatitis resulting from contact with the poison ivy plant; "my poison ivy is drying up
dermatitis resulting from contact with the poison ivy plant; "my poison ivy is drying up"
A woody vine plant in the family Anacardiaceae well-known for its ability to produce urushiol, a skin irritant that causes an itching rash for most people