Definition of heartwood
: the older harder nonliving central wood of trees that is usually darker, denser, less permeable, and more durable than the surrounding sapwood
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Recent Examples of heartwood from the Web
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For decking that's 100 percent heartwood, the CRA suggests using construction heart redwood.
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However, the level of weather- and bug-resistance is directly related to the amount of heartwood in the boards.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'heartwood.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of heartwood
circa 1575
HEARTWOOD Defined for Kids
heartwood
playDefinition of heartwood for Students
: the usually dark wood in the center of a tree
Learn More about heartwood
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See words that rhyme with heartwood Britannica.com: Encyclopedia article about heartwood
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