lignin

noun

lig·​nin ˈlig-nən 

: 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

By incorporating lignin into the carbon fiber precursor, the researchers reduced PAN use by 50%. — Neetika Walter, Interesting Engineering, 18 Sep. 2026

Biological materials like lignin are also entering the equation, opening new avenues for material innovation rooted in abundant, renewable sources. — Elena Bou, Forbes.com, 29 Apr. 2026

Word History

First Known Use

1822, in the meaning defined above

Rhymes for lignin

• chignon
• mignon

Kids Definition

lignin

noun

lig·​nin ˈlig-nən 

: a substance related to cellulose that occurs in the woody cell walls of plants and in the cementing material between them

Medical Definition

lignin

noun

lig·​nin ˈlig-nən 

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