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nodule

 [noj-ool]   Origin

nod·ule

   [noj-ool]
noun
1.
a small node, knot, or knob.
2.
a small, rounded mass or lump.
3.
Botany. a tubercle.
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Origin:
1590–1600; < Latin nōdulus a little knot, equivalent to nōd(us) node + -ulus -ule
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Nodule is always a great word to know.
So is multicellular diploid. Does it mean:
organisms having pairs of homologous chromosomes
plants without a xylem and phloem to transport fluid and nutrients internally
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Collins
World English Dictionary
nodule (ˈnɒdjuːl)
 
—n
1.  a small knot, lump, or node
2.  Also called: root nodule any of the knoblike outgrowths on the roots of clover and many other legumes: contain bacteria involved in nitrogen fixation
3.  anatomy any small node or knoblike protuberance
4.  a small rounded lump of rock or mineral substance, esp in a matrix of different rock material
 
[C17: from Latin nōdulus, from nōdus knot]
 
'nodular
 
—adj
 
'nodulose
 
—adj
 
'nodulous
 
—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
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Etymonline
Word Origin & History

nodule
1600, from L. nodulus "small knot," dim. of nodus "knot."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

nodule nod·ule (nŏj'&oomacr;l)
n.

  1. A small node.

  2. A small mass of tissue or aggregation of cells.

nod'u·lar (nŏj'ə-lər) or nod'u·lose' (-lōs') or nod'u·lous (-ləs) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
nodule   (nŏj'l)  Pronunciation Key 

  1. A small, usually hard mass of tissue in the body.

  2. A small, knoblike outgrowth found on the roots of many legumes, such as alfalfa, beans, and peas. Nodules grow after the roots have been infected with nitrogen-fixing bacteria of the genus Rhizobium. See more at legume.

  3. A small, rounded lump of a mineral or mixture of minerals that is distinct from and usually harder than the surrounding rock or sediment. Nodules often form by replacement of a small part of the rocks in which they form.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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