Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
The older, nonliving central wood of a tree or shrub, usually darker and harder than the younger sapwood. Also called duramen.
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.
(Botany) the central core of dark hard wood in tree trunks, consisting of non-functioning xylem tissue that has become blocked with resins, tannins, and oils. Compare sapwood
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
the dense, dark, nonfunctioning older wood at the core of a tree trunk; duramen.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Switch to new thesaurus
|Noun||1.||heartwood - the older inactive central wood of a tree or woody plant; usually darker and denser than the surrounding sapwood|
tree - a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms
wood - the hard fibrous lignified substance under the bark of trees
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.