noun a complex polymer; the chief constituent of wood other than carbohydrates; binds to cellulose fibers to harden and strengthen cell walls of plants
wood: cf. F. lignine
- (Bot.) A substance characterizing wood cells and differing from cellulose in its conduct with certain chemical reagents.
✍ Recent authors have distinguished four forms of this substance, naming them lignose, lignin, lignone, and lignireose.
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