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Meaning of POISON OAK

Pronunciation:  'poyzun owk

WordNet Dictionary
  1. [n]  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
  2. [n]  dermatitis resulting from contact with a poison oak plant
 Synonyms: markweed, poison ivy, poison mercury, Rhus radicans, Toxicodendron radicans
 See Also: genus Toxicodendron, poisonous plant, Rhus dermatitis, Toxicodendron



Medical Dictionary
 Definition: Poison oak is a form of "contact dermatitis" or inflammation of the skin resulting from chemicals produced from the poison oak plant contacting the skin. The chemicals cause an immune reaction producing redness, itching and blistering of the skin.