'Duramen' definitions:

Definition of 'duramen'

(from WordNet)
noun
The older inactive central wood of a tree or woody plant; usually darker and denser than the surrounding sapwood [syn: heartwood, duramen]

Definition of 'Duramen'

From: GCIDE
  • Duramen \Du*ra"men\, n. [L., hardness, a hardened, i. e., ligneous, vine branch, fr. durare to harden. See Dure.] (Bot.) The heartwood of an exogenous tree. [1913 Webster]

Definition of 'duramen'

From: GCIDE
  • Heartwood \Heart"wood`\ (h[aum]rt"w[oo^]d`), n. 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. [1913 Webster]