rhubarb

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rhu·barb

(rū'barb),
Any plant of the genus Rheum (family Polygonaceae), especially R. rhaponticum, garden rhubarb, and R. officinale or R. palmatum; the last two species or their hybrids, deprived of periderm tissues, dried, and powdered, are used for their astringent, tonic and laxative effects.
Farlex Partner Medical Dictionary © Farlex 2012

rhubarb

(ro͞o′bärb′)
n.
1. Any of several plants of the genus Rheum, especially R. rhabarbarum, having long edible green or reddish leafstalks that are usually cooked and sweetened. Also called pie plant.
2. A preparation made from the dried rhizomes and roots of any of several plants of the genus Rheum, especially R. palmatum or R. officinale of East Asia, used as a laxative.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
References in periodicals archive ?
It is the first time the benefits of British garden rhubarb, specifically a variety grown in South Yorkshire, have been studied.
Whether you use forced rhubarb, which appears in January/February, or the more robust young garden rhubarb, available from early March, you'll have them begging for more of these delicious dishes created by Amanda Grant