the hard central wood of the trunk of an exogenous tree; duramen.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use heartwood in a sentence
She also authored heartwood, a story collection for adult literacy students, and edited The Ringing Ear: Black Poets Lean South.Exclusive: The National Book Awards Longlist for Poetry | The Daily Beast | September 17, 2013 | THE DAILY BEAST
The spores of a heartwood-inhabiting fungus cannot germinate and thrive unless they fall upon the heartwood of the tree.Our National Forests | Richard H. Douai Boerker
Spores of parasitic fungi enter the cracks, germinate and infect the heartwood.Our National Forests | Richard H. Douai Boerker
Nearly all the larger trees in the Fuegian forests have the heartwood decayed, and are worthless as timber.The Land of Fire | Mayne Reid
Pur′ple-wood, -heart, the heartwood of Copaifera pubiflora, used for ramrods.
The living outer portion of a trunk or large branch of a tree between the heartwood and the bark.Michigan Trees | Charles Herbert Otis
British Dictionary definitions for heartwood
the central core of dark hard wood in tree trunks, consisting of nonfunctioning xylem tissue that has become blocked with resins, tannins, and oils: Compare sapwood
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for heartwood
The older, nonliving central wood of a tree or woody plant, usually darker and harder than the younger sapwood. Unlike the sapwood, it no longer conducts water, and its main function is the support of the tree.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.