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midrib

[mid-rib] /ˈmɪdˌrɪb/
noun, Botany
1.
the central or middle rib of a leaf.
Origin
1690-1700
1690-1700; mid- + rib1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for midrib
  • The tail exactly resembled the stem or continuation of the midrib of the dead leaf.
  • Leaves are partially eaten or completely eaten to the midrib.
  • Brown midrib forage sorghum has been shown to contain less lignin is therefore more digestible than normal forage sorghum.
  • They straddle the leaf margin and devour all of the leaflet except the midrib.
  • The midrib extends from the base to the apex of the leaf.
  • All leaflets are deeply incised halfway or more to the midrib.
  • Each leaf is composed of five to seven tiny narrow leaflets arranged in pairs along a midrib.
  • About two dozen hairy leaflets are arranged along a midrib to form erect leaves about six inches long.
  • Hydrilla plants have leaves in whorls around the stem, small spines along the leaf edges, and a reddish midrib on the leaf.
  • Each silvery-hairy leaf has eleven-to-twenty one leaflets arranged along a midrib.
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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