duramencommon nounSyllable DecompositionduramenEtymologyexpandfrom Latin duramen.Definition1. Central part of a tree trunk that is lignified and consists of almost dead wood (where sap no longer circulates), hard, compact, dense, dry, and rot-resistant. It is the most mechanically resistant part and often darker than the sapwood.botaniqueexpandSynonymsbois de cœurbois parfaitPluralduramensTranslationsenglish:old xylem