Pronunciation: [djˈʊ͡əɹe͡ɪmˌɛn] (IPA) 
Duramen is a term used in botany to refer to the solid, hard wood found in the central part of tree branches and stems. The word is pronounced /djʊˈreɪmən/ in IPA phonetic transcription. The first syllable, "du", is pronounced with a "d" sound followed by a "yoo" sound. The second syllable, "ra", has a long "a" sound followed by a "m" sound. The final syllable, "men", is pronounced with a short "e" sound followed by an "n" sound.
Duramen is a noun that refers to the central, woody part of a tree trunk. Also known as heartwood, it is the hardened and darker portion of the tree trunk that is located towards the center, surrounding the sapwood. Duramen is formed as the tree ages and undergoes various physiological changes.
The duramen is distinct from the outermost layer of the trunk known as the sapwood. Unlike sapwood, the duramen has lost its ability to conduct water and nutrients, as its cells have become blocked with various substances such as resins, tannins, and other chemical compounds. As a result, the duramen serves primarily as a structural support for the tree.
The transformation of sapwood into duramen typically takes place over several years and can vary depending on the tree species. The overall color of the duramen may also differ, depending on the type of tree. It is often darker than the sapwood due to the presence of compounds such as lignin, which gives it increased strength and resistance to decay and rot.
In addition to its structural role, duramen is highly valued in the woodworking industry due to its unique characteristics. It is known for its durability, hardness, and rich, often contrasting colors, making it popular for high-quality furniture, flooring, and decorative purposes.
The heartwood of an exogenous tree.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The inner or heart wood of a tree; the harder and more highly coloured portion of trees and branches.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word duramen has its origin in Latin. It is derived from the Latin word durus, which means hard or solid.
