[ mid-rib ]

  1. the central or middle rib of a leaf.

Origin of midrib

First recorded in 1690–1700; mid- + rib1

Words Nearby midrib

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use midrib in a sentence

  • Another species—D. hypoglossum—is characterised by the leaflets of the midrib bearing still smaller leaflets in the same manner.

    The Sea Shore | William S. Furneaux
  • It has no midrib or air-vessels, and the fruit is contained in forked receptacles at the tips of the branches.

    The Sea Shore | William S. Furneaux
  • It has a fibrous root, and a stalked, lanceolate, entire frond with a distinct midrib throughout.

    The Sea Shore | William S. Furneaux
  • "Now for the feathering," and Yan showed Sam how to split the midrib of a turkey feather and separate the vane.

    Two Little Savages | Ernest Thompson Seton
  • Most of the lobes are attached to the wing of the midrib by a broad base: the lower ones sometimes have a short stalk.

    Beautiful Ferns | Daniel Cady Eaton

British Dictionary definitions for midrib


/ (ˈmɪdˌrɪb) /

  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

Scientific definitions for midrib


[ mĭdrĭb′ ]

  1. 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.