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)