heartwood

noun

heart·​wood ˈhärt-ˌwu̇d How to pronounce heartwood (audio)
: the older harder nonliving central wood of trees that is usually darker, denser, less permeable, and more durable than the surrounding sapwood

Examples of heartwood in a Sentence

Recent Examples on the Web
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Sure enough, with a leaf litter path and a mossy front porch, brightly colored gnome figures are tucked against the inner heartwood of the tree. Carl R. Gold, Baltimore Sun, 29 Mar. 2026 The heartwood in the tree’s center decays first and makes for easy excavating. Madison Dapcevich, Outside, 21 Sep. 2025 Artisans sort the wood by hand, selecting only the darkest heartwood, and distill it for just three days. Adam Hurly, Robb Report, 2 Sep. 2025 Taiwanofungus camphoratus, once known as Antrodia cinnamomea, grows exclusively inside the decaying heartwood of the endangered stout camphor tree (Cinnamomum kanehirae). New Atlas, 15 Aug. 2025 See All Example Sentences for heartwood

Word History

First Known Use

circa 1575, in the meaning defined above

Time Traveler
The first known use of heartwood was circa 1575

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Cite this Entry

“Heartwood.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heartwood. Accessed 27 Apr. 2026.

Kids Definition

heartwood

noun
heart·​wood -ˌwu̇d How to pronounce heartwood (audio)
: the older harder nonliving and usually darker wood of the central part of a tree trunk compare sapwood

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