LIGNIN
lignin
(noun) a complex polymer; the chief constituent of wood other than carbohydrates; binds to cellulose fibers to harden and strengthen cell walls of plants
Source: WordNet® 3.1
Etymology
Noun
lignin (usually uncountable, plural lignins)
(organic compound) A complex non-carbohydrate aromatic polymer present in all wood.
Anagrams
• lining
Source: Wiktionary
Lig"nin, n. Etym: [L. lignum wood: cf. F. lignine.] (Bot.)
Definition: A substance characterizing wood cells and differing from
cellulose in its conduct with certain chemical reagents.
Note: Recent authors have distinguished four forms of this substance,
naming them lignose, lignin, lignone, and lignireose.
Source: Webster’s Unabridged Dictionary 1913 Edition