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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Botany See heartwood.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. heartwood

from the GNU version of the Collaborative International Dictionary of English

  • n. The heartwood of an exogenous tree.

from The Century Dictionary and Cyclopedia

  • n. In botany, the central wood or heart-wood in the trunk of an exogenous tree.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the older inactive central wood of a tree or woody plant; usually darker and denser than the surrounding sapwood


Latin dūrāmen, hard growth of a vine, from dūrāre, to harden, from dūrus, hard; see deru- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin dūrāmen. (Wiktionary)



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