Lexic.us

Definition of Lignin

1. Noun. A complex polymer; the chief constituent of wood other than carbohydrates; binds to cellulose fibers to harden and strengthen cell walls of plants.

Definition of Lignin

1. n. A substance characterizing wood cells and differing from cellulose in its conduct with certain chemical reagents.

Definition of Lignin

1. Noun. (organic compound) A complex non-carbohydrate aromatic polymer present in all wood. ¹

¹ Source: wiktionary.com

Definition of Lignin

1. an essential part of woody tissue [n -S]

Medical Definition of Lignin

1. Organic substance which act as a binder for the cellulose fibres in wood and certain plants and adds strength and stiffness to the cell walls. The chemical structure of lignin is composed of a complex polymer of phenylpropanoid subunits, laid down in the walls of plant cells such as xylem vessels and sclerenchyma. It imparts considerable strength to the wall and also protects it against degradation by microorganisms. It is also laid down as a defence reaction against pathogenic attack, as part of the hypersensitive response of plants. (14 Oct 1997)

Lexicographical Neighbors of Lignin

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