• synonyms


  1. any shrub or small tree of the anacardiaceous genus Rhus, several species of which are cultivated as ornamentals for their foliage, which assumes brilliant colours in autumnSee also sumach
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Examples from the Web for rhus

Historical Examples

  • Flowers and fruit like those of the cultivated species (Rhus Cotinus).

    Trees of the Northern United States

    Austin C. Apgar

  • The lacquer-tree (Rhus vernicifera) grows mainly in the island of Hondo.

    Commercial Geography

    Jacques W. Redway

  • I felt positive that the remedy indicated was Rhus Toxicodendron.

  • For the vessicular kind, where there are blisters, Rhus tox.

  • If it is produced by over-exertion, Rhus is the proper remedy.

rhus in Medicine


(rōōs, rŭs)
  1. A genus of vines and shrubs including several species, especially poison ivy, poison oak, and poison sumac, producing oils that can cause dermatitis.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.