poison oak


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poison oak

n.
1. Either of two plants, Toxicodendron pubescens, a shrub of the southeast United States, or T. diversilobum, a shrub or vine of western North America, having compound leaves with three lobed or toothed leaflets, and causing a rash on contact.
3. A skin rash caused by contact with one of these plants.

poison oak

n
1. (Plants) either of two North American anacardiaceous shrubs, Rhus toxicodendron or R. diversiloba, that are related to the poison ivy and cause a similar rash. See also sumach1
2. (Plants) (not in technical use) another name for poison ivy

poi′son oak′


n.
either of two North American shrubs of the cashew family, Rhustoxicodendron, of the eastern U.S., or R.diversiloba, of the Pacific coastal area, with leaves resembling those of poison ivy: may cause allergic dermatitis when touched.
[1735–45, Amer.]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.poison oak - dermatitis resulting from contact with a poison oak plant
Rhus dermatitis - contact dermatitis resulting from contact with plants of the genus Toxicodendron
2.poison oak - climbing plant common in eastern and central United States with ternate leaves and greenish flowers followed by white berriespoison oak - 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
genus Toxicodendron, Toxicodendron - in some classifications: comprising those members of the genus Rhus having foliage that is poisonous to the touch; of North America and northern South America
poisonous plant - a plant that when touched or ingested in sufficient quantity can be harmful or fatal to an organism
Translations

poison oak

n (bot) roble venenoso
References in periodicals archive ?
This allergic reaction is recognized as secondary to exposure to the urushiol oil which is found in poison ivy, poison oak, and poison sumac.
The wider trails - especially at the summit where people used to have to clamber their own way to the top, grasping at boulders while avoiding healthy clumps of poison oak - are a boon, Eugene residents and enthusiastic hikers Charley and Leslie Wright said.
Clinical Repair Cream is ideal for those suffering from dry, itchy skin and Extra Strength Spray is formulated for use on contagious or hard-to-reach areas, such as rashes from poison oak or ivy.
Other rules include: Trash, household items, building materials, roots, bushes, briars, and harmful plants, like poison ivy, poison oak or poison sumac will not be accepted; brush is limited to branches with a diameter no larger than 6 inches.
I HATE POISON OAK," I muttered as a buck bird-dogged a doe through the brush in front of me.
I didn't cuss or scratch when the poison oak started itching.
It takes the goats one to two weeks to eat up the brush, star thistle, and poison oak (unlike humans, they're not allergic to it), leaving manicured slopes behind.
HIGH School Musical star Zac Efron has revealed that he suffered a severe allergic reaction to poison oak during a camping trip.
All ours: Wild clumps of poison oak, a lank Rust-eaten,
This means that now, when the family is planning a summer camping trip in the poison ivy or poison oak infested area, children and adults can obtain immunity by beginning the dosage six weeks before the planned trip.
Poison oak, by contrast, grows like a bush and is therefore more confined.