# lignin

> English word · Noun · IPA /ˈlɪɡ.nɪn/ · frequency rank #56,245

## Definitions
1. A complex non-carbohydrate aromatic polymer present in all wood.

## Etymology
From Latin lignum (“wood”) + -in.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/lignin