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Medical Dictionary

poison oak

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noun \-ˈōk\

Medical Definition of poison oak

  1. 1:  any of several plants included in the genus Rhus or sometimes in the genus Toxicodendron that produce an irritating oil like that of poison ivy:a:  a bushy plant (R. diversiloba synonym T. diversilobum) of the Pacific coastb:  a bushy plant (R. toxicodendron synonym T. pubescens) of the southeastern United States

  2. 2:  poison ivy 1a

  3. 3:  a skin rash produced by poison oak




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