noun Botany.

the central or middle rib of a leaf.

Origin of midrib

First recorded in 1690–1700; mid- + rib1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for midribs

Historical Examples of midribs

  • The midribs are removed and the segments are rolled into round bundles, say by fives.

    Philippine Mats

    Hugo H. Miller

  • They are usually twice pinnatifid, the pinnules being connected by a very narrow foliaceous border along the midribs.

    Beautiful Ferns

    Daniel Cady Eaton

  • Leaves long and narrow; the veins and midribs green; the head is greenish, and generally covered by the leaves.

  • The leaves are large, with the midribs and veins red; and the branches and pedicels are also of a dark reddish purple.

  • Also, she had ten coils of dewarra (cowrie shells threaded on the midribs of the coco-nut leaf, and used as the native currency).

British Dictionary definitions for midribs



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

midribs in Science



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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.