rhizome

[rahy-zohm]
noun Botany.
a rootlike subterranean stem, commonly horizontal in position, that usually produces roots below and sends up shoots progressively from the upper surface.

Origin:
1835–45; < Neo-Latin rhizoma < Greek rhízōma root, stem, noun of result from rhizoûn to fix firmly, take root, derivative of rhíza root1

rhizomatous [rahy-zom-uh-tuhs, -zoh-muh-] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To rhizome
Collins
World English Dictionary
rhizome (ˈraɪzəʊm)
 
n
rootstock, Also called: rootstalk a thick horizontal underground stem of plants such as the mint and iris whose buds develop new roots and shoots
 
[C19: from New Latin rhizoma, from Greek, from rhiza a root]
 
rhizomatous
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

rhizome
1845, from Gk. rhizoma "mass of tree roots," from rhizoun "cause to strike root," from rhiza "root," probably from PIE *wrad- "branch, root" (cf. L. radix "root," O.N. rot "root," O.E. wyrt "plant, herb;" see radish).
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Science Dictionary
rhizome  [%PREMIUM_LINK%]     (rī'zōm')  Pronunciation Key 


(click for larger image in new window)

A plant stem that grows horizontally under or along the ground and often sends out roots and shoots. New plants develop from the shoots. Ginger, iris, and violets have rhizomes. Also called rootstock. Compare bulb, corm, runner, tuber.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
With a knife, cut the parent rhizome into segments so each has its own leaf fan.
Powdered rhizome has been considered particularly effective against parasitic worms.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature