lignin

noun
lig·​nin | \ ˈlig-nən How to pronounce lignin (audio) \

Definition of lignin

: an amorphous polymer related to cellulose that provides rigidity and together with cellulose forms the woody cell walls of plants and the cementing material between them

Examples of lignin in a Sentence

Recent Examples on the Web Recent breakthroughs in producing plastics from cellulose or lignin (the dry matter in plants) promise to overcome those drawbacks. Scientific American, "Top 10 Emerging Technologies of 2019," 1 Dec. 2019 Furthermore, wood chips are high in lignins and other hard-to-digest compounds, and the decomposition process will be very slow. oregonlive, "Ask an expert: Think twice before installing weed barrier under mulch," 12 Apr. 2020 Leaf litter from trees attacked by lace bugs is higher in lignin, a type of fiber that decomposes very slowly. Ula Chrobak, Popular Science, "Bugs, hares, and other unexpected animals that control wild fires," 9 Mar. 2020 These days lignin has become cost-effective for 3D printing or adhesives, and it can be plasticized or used to reinforce other bioplastics. Troy Farah, Ars Technica, "Bioplastics continue to blossom—are they really better for the environment?," 20 Jan. 2020 Lignin Wurm says one of the most promising bioplastic candidates is lignin, a blackish biodegradable byproduct of paper manufacturing. Troy Farah, Ars Technica, "Bioplastics continue to blossom—are they really better for the environment?," 20 Jan. 2020 The third is to find employment for lignin, a by-product of the pulping process which is, at the moment, usually burned. The Economist, "How to make use of all of a tree," 17 Oct. 2019 During the Devonian, plants hit on several winning adaptations, including the stem-strengthening compound lignin and a full-fledged vascular structure. Michael Greshko, National Geographic, "What are mass extinctions, and what causes them?," 30 Sep. 2019 To investigate further, researchers from Austria and Germany isolated individual walnut shell cells by soaking them in a solution designed to remove lignin, the complex organic polymer that makes plant cell walls sturdy. Ian Randall, Science | AAAS, "Why walnuts are such tough nuts to crack," 3 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lignin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of lignin

1822, in the meaning defined above

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Time Traveler for lignin

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The first known use of lignin was in 1822

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Statistics for lignin

Last Updated

15 May 2020

Cite this Entry

“Lignin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lignin. Accessed 3 Jul. 2020.

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More Definitions for lignin

lignin

noun
lig·​nin | \ ˈlig-nən How to pronounce lignin (audio) \

Medical Definition of lignin

: an amorphous polymeric substance related to cellulose that together with cellulose forms the woody cell walls of plants and the cementing material between them

More from Merriam-Webster on lignin

Britannica.com: Encyclopedia article about lignin

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