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[mass noun] The heartwood of a tree.
- ‘Also, in general, the quality of a bolt is roughly divided into a comparatively hard alburnum and a comparatively soft duramen, and usually, each part has a different moisture content and/or color.’
- ‘The characterization and utilization of molecules of interest such as the phenolic molecules found in the duramen of certain species (tannins, flavonoids, naphtoquinones) with strong antioxidant properties which are toxic for pathogenic organisms (bacteria, fungi, insects) represent a future pathway for enhancing the value of wood products.’
- ‘Duramen is resistant; therefore, pieces made entirely out of duramen need no preservation.’
- ‘The sapwood and the duramen are therefore eliminated by splitting, and then the plank is planed down until no irregularities are left in the wood (such as knots).’
- ‘High natural durability, duramen is resistant against biological attack; however it's resistance to underwater insects is low, vacuum-pressure chamber is recommended.’
Mid 19th century: from Latin, literally hardness, from durare harden.
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