lignin

[lig-nin]
noun
  1. Botany. an organic substance that, with cellulose, forms the chief part of woody tissue.
  2. Papermaking. impure matter found in wood pulp.

Origin of lignin

First recorded in 1815–25; lign- + -in2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for lignin

Historical Examples of lignin


British Dictionary definitions for lignin

lignin

noun
  1. a complex polymer occurring in certain plant cell walls making the plant rigid
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

Word Origin and History for lignin
n.

1822, from Latin lignum "wood" (see ligni-) + chemical suffix -in (2).

Online Etymology Dictionary, © 2010 Douglas Harper

lignin in Science

lignin

[lĭgnĭn]
  1. A complex organic compound that binds to cellulose fibers and hardens and strengthens the cell walls of plants. Lignin is a polymer consisting of various aromatic alcohols, and is the chief noncarbohydrate constituent of wood.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.