sapwood

Meanings

1. 1
   noun

   the younger, living outer wood of a tree trunk or branch, through which water and minerals are conducted

   The pale sapwood formed a ring around the darker heartwood.

A compound of sap and wood. It names the relatively young outer xylem that still conducts sap, in contrast with the older, usually darker and less active heartwood at the center of a trunk or branch.

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