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[lig-yool] /ˈlɪg yul/
noun, Botany.
a thin, membranous outgrowth from the base of the blade of most grasses.
a strap-shaped corolla, as in the ray flowers of the head of certain composite plants.
Origin of ligule
1595-1605; < Latin ligula; see ligula Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for ligule
Historical Examples
  • The ligule is a distinct membrane and the nodes are glabrous.

    A Handbook of Some South Indian Grasses Rai Bahadur K. Ranga Achariyar
  • The ligule is distinct, consisting of a fringe of stiff hairs.

    A Handbook of Some South Indian Grasses Rai Bahadur K. Ranga Achariyar
  • Roots very tough and stringy: ligule small, but thick and blunt.

    Grasses H. Marshall Ward
  • Anthoxanthum differs in its habit, ears, scent, sheath and ligule.

    Grasses H. Marshall Ward
  • Changed the last index reference for "ligule" from 57 to 67; also the reference for "Ocreate."

  • Molinia also has a tuft of hairs instead of a ligule, and a split sheath, and its habit is different.

    Grasses H. Marshall Ward
  • ligule obsolete, with a stiff subulate process on the sheath opposite the blade-insertion.

    Grasses H. Marshall Ward
  • Leaves conduplicate or convolute, short and narrow, the ligule short: minute ears at base.

    Grasses H. Marshall Ward
  • From Holcus it is easily distinguished by the sheaths, ligule and soft hairs of that genus.

    Grasses H. Marshall Ward
  • The ligule is a structure peculiar to grasses and it varies very much.

    A Handbook of Some South Indian Grasses Rai Bahadur K. Ranga Achariyar
British Dictionary definitions for ligule


a membranous outgrowth at the junction between the leaf blade and sheath in many grasses and sedges
a strap-shaped corolla, such as that of a ray floret in the daisy
Word Origin
C19: via French, from Latin ligula strap, variant of lingula, from lingua tongue
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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ligule in Science
A straplike structure, such as the corolla of fused petals in a ray flower or a membranous or hairy appendage between the sheath and blade of a grass leaf.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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