poison sumac


noun

a shrub or small tree, Rhus vernix (or Toxicodendron vernix), of swampy areas of the eastern U.S., having pinnate leaves and causing severe dermatitis when touched by persons sensitive to it.

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Also called poison dogwood.

Origin of poison sumac

First recorded in 1810–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for poison sumac

poison sumac

n.

A swamp shrub of the southeast United States, having compound leaves and greenish-white berries and causing an itching rash on contact with the skin.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.