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2017 Word of the Year

midrib

[mid-rib] /ˈmɪdˌrɪb/
noun, Botany.
1.
the central or middle rib of a leaf.
Origin of midrib
1690-1700
First recorded in 1690-1700; mid- + rib1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for midrib

midrib

/ˈmɪdˌrɪb/
noun
1.
the main vein of a leaf, running down the centre of the blade
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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midrib in Science
midrib
  (mĭd'rĭb')   
The central or main vein of a leaf, as in eudicots, magnoliids, and ferns. Midribs generally protrude from the underside of leaves with pinnate venation. See more at venation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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