silvichemical
sil·vi·chem·i·cal
(sĭl′vĭ-kĕm′ĭ-kəl)n.
Any of various chemicals derived from wood.
[Latin silva, forest + chemical.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.