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rhizome

[rahy-zohm] /ˈraɪ zoʊm/
noun, Botany
1.
a rootlike subterranean stem, commonly horizontal in position, that usually produces roots below and sends up shoots progressively from the upper surface.
Origin
1835-1845
1835-45; < Neo-Latin rhizoma < Greek rhízōma root, stem, noun of result from rhizoûn to fix firmly, take root, derivative of rhíza root1
Related forms
rhizomatous
[rahy-zom-uh-tuh s, -zoh-muh-] /raɪˈzɒm ə təs, -ˈzoʊ mə-/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for rhizome
  • 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.
British Dictionary definitions for rhizome

rhizome

/ˈraɪzəʊm/
noun
1.
a thick horizontal underground stem of plants such as the mint and iris whose buds develop new roots and shoots Also called rootstock, rootstalk
Derived Forms
rhizomatous (raɪˈzɒmətəs; -ˈzəʊ-) adjective
Word Origin
C19: from New Latin rhizoma, from Greek, from rhiza a root
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
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Word Origin and History for rhizome
n.

1832, from Modern Latin rhizoma, from Greek rhizoma "mass of tree roots," from rhizoun "cause to strike root, root into the ground, plant," from rhiza "root," probably from PIE *wrad- "branch, root" (cf. Latin radix "root," Old Norse rot "root," Old English wyrt "plant, herb;" see radish).

Online Etymology Dictionary, © 2010 Douglas Harper
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rhizome in Science
rhizome
  (rī'zōm')   

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.
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