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lignin

Pronunciation: lig'nin

Definition: A random polymer of coniferyl alcohol accompanying cellulose and present in vegetable fiber and wood cells; a source of vanillin (by oxidation of lignin); lignin composition varies with plant species. It is one of the most abundant biopolymers in nature.

[L. lignum, wood]

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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