Dictionary

heartwood

noun heart·wood \-ˌwd\

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

First Known Use of HEARTWOOD

1810
HEARTWOOD Defined for Kids

heartwood

noun heart·wood \ˈhärt-ˌwd\

Definition of HEARTWOOD for Kids

:  the usually dark wood in the center of a tree

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June 30, 2015
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