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1. (n.) heartwood
the dense, dark, nonfunctioning older wood at the core of a tree trunk; duramen.
Etymology: (1795–1805)
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| Definition of 'heartwood' |
Princeton's WordNet |
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1. (noun) heartwood, duramen
the older inactive central wood of a tree or woody plant; usually darker and denser than the surrounding sapwood
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| Definition of 'heartwood' |
Webster Dictionary |
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1. (noun) heartwood
the hard, central part of the trunk of a tree, consisting of the old and matured wood, and usually differing in color from the outer layers. It is technically known as duramen, and distinguished from the softer sapwood or alburnum
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Definitions of heartwood 
