Lignin

The most abundant natural aromatic organic polymer found in all vascular plants. Lignin together with cellulose and hemicellulose are the major cell wall components of the fibers of all wood and grass species. Lignin is composed of coniferyl, p-coumaryl, and sinapyl alcohols in varying ratios in different plant species. (From Merck Index, 11th ed) This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.

Yes. Lignin is also referred to as Lignins in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.

Lignin falls under the broader medical category "Chemicals and Drugs" in the MeSH hierarchy (tree numbers: D05.750.078.562.180.515, D05.750.078.687, D20.538). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.

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