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
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Recent Examples of lignin from the Web
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Instead, the main components of wood are cellulose and lignin.
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Removing the lignin, a heat conductor, gave the resulting product powerful insulating capabilities.
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The first step in that process (as in Hu’s) is to remove lignin, a substance that not only stiffens wood but also creates its brownish color.
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For the nanowood, the team removed the lignin, the polymer that holds the cellulose of wood together.
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But for this project, Hu and his colleagues removed all of the lignin and most of the hemicellulose.
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Somewhat counterintuitively, Hu and his team removed the wood's lignin polymers in order to make their wood even stronger.
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Heat can travel up and down the fibers with ease, but can't easily cross them, particularly because of the air gaps left after all the woody filler (lignin and hemicellulose) was removed.
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The second most abundant naturally-occurring polymer on Earth, lignin is what makes wood rigid and brown.
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.
First Known Use of lignin
1822
Medical Dictionary
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
Learn More about lignin
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Britannica.com: Encyclopedia article about lignin
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