Lignin ALL0-9ABCDEFGHIJKLMNOPQRSTUVWXYZ« Back to Glossary IndexTags: Books, Conservation, Matting, PaperAn organic substance found in plant and wood matter. Considered impure matter in paper pulp. Causes discoloration over time when contained in paper supports and mat board. Related Glossary Terms: Bainbridge Alphamat Artcare BoardBainbridge Alpharag Artcare BoardCrescent Conservation MatboardCrescent Ragmat Museum BoardOffset« Back to Glossary Index