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
Recent Examples of heartwood from the Web
For decking that's 100 percent heartwood, the CRA suggests using construction heart redwood.
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
HEARTWOOD Defined for Kids
Definition of heartwood for Students
: the usually dark wood in the center of a tree
Seen and Heard
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