heartwood definition

  • noun:
    • The older, nonliving central wood of a tree or woody plant, typically deeper and more difficult compared to the more youthful sapwood. Also called duramen.
    • The timber nearer one's heart of a stem or branch, different in shade through the sapwood
    • The hard, main area of the trunk of a tree, composed of the old and matured wood, and often varying in shade through the external layers. It really is technically generally duramen, and distinguished through the gentler sapwood or alburnum.
    • The central lumber within the trunk of an exogenous tree; duramen.
    • The Tasmanian ironwood, Notel├Ža ligustrina, the hard, close-grained lumber that is used for switching.
    • the older sedentary central wood of a tree or woody plant; frequently darker and denser as compared to surrounding sapwood

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