Dictionary

lignin

noun lig·nin \ˈlig-nən\

Definition of LIGNIN

:  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

First Known Use of LIGNIN

1822

lignin

noun lig·nin \ˈlig-nən\   (Medical Dictionary)

Medical Definition of LIGNIN

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

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