noun
- the younger, outer layers of wood in a tree trunk that conduct water and nutrients
Usage: botany
Examples
- The sapwood appears lighter in color than the darker heartwood at the center.
- Insects often attack the sapwood because it contains more moisture and nutrients.
- When cutting lumber, carpenters sometimes remove the sapwood to prevent decay.
- The sapwood of this oak tree extends about two inches from the bark.
- Pine sapwood is particularly susceptible to blue stain fungus.
- The tree’s sapwood transports water from the roots to the leaves.