heartwood

[hahrt-woo d]

Origin of heartwood

First recorded in 1795–1805; heart + wood1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for heartwood

Contemporary Examples of heartwood

Historical Examples of heartwood

  • The duramen or heartwood is the inner, darker part of the log.

    Seasoning of Wood

    Joseph B. Wagner

  • It was significant that practically all of the checking occurred in the heartwood.

    Seasoning of Wood

    Joseph B. Wagner

  • The heartwood is darker than in most oaks, and the sapwood is brown.

    American Forest Trees

    Henry H. Gibson

  • The heartwood forms while the tree is living, not after it dies.

    American Forest Trees

    Henry H. Gibson

  • Posts sawed from the heartwood of large trees would do better.

    American Forest Trees

    Henry H. Gibson


British Dictionary definitions for heartwood

heartwood

noun
  1. the central core of dark hard wood in tree trunks, consisting of nonfunctioning xylem tissue that has become blocked with resins, tannins, and oilsCompare 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

heartwood in Science

heartwood

[härtwud′]
  1. 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.