poison ivy

(redirected from poison oakpoison sumac)
Also found in: Dictionary, Thesaurus, Encyclopedia.

poi·son i·vy

, poison oakpoison sumac (poy'zŏn ī'vē),
1.
2. Common name for the cutaneous eruption (Rhus dermatitis) caused by contact with these species of Toxicodendron.
Farlex Partner Medical Dictionary © Farlex 2012

poison ivy

n.
1. A North American shrub or vine (Toxicodendron radicans) that has compound leaves with three leaflets, small green flowers, and whitish berries and that causes a rash on contact.
2. A skin rash caused by contact with this plant. In both senses also called poison oak.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
Pharmacognosy A plant that is highly allergenic due to urushiol—which is also present in mango, japanese lacquer tree, cashews, as well as poison oak and poison sumac
Common urushiol-rich plants Poison ivy (Toxicodendron radicans, eastern US) poison oak (T diversilobium or Rhus diversiloba, western US), poison sumac (T vernix, southern US)
Public health A popular term for any allergic reaction or dermatopathy caused by T radicans, as in ‘Bob has poison ivy’
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

poison ivy

1. A plant that is highly allergenic due to urushiol, which is also found in mango, japanese lacquer tree, cashews; common urushiol-rich plants: poison ivy–Toxicodendron radicans, eastern US, poison oak–T diversilobium or Rhus diversiloba, western US; poison sumac–T vernix, southern US. See Urushiol.
2. A popular term for any allergic reaction or dermatopathy caused by T radicans.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

poi·son i·vy

, poison oak , poison sumac (poy'zŏn ī'vē, ōk, sūmak)
2. Common name for the cutaneous eruption caused by contact with these species of Toxicodendron.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012