An assembly made by bonding layers of veneer or lumber with an adhesive so that most adjacent layers have their grains going in perpendicular directions to increase dimensional stability.
Boards expand when they heat up and contract when they cool down. This must be accounted for when spacing deck boards.
When the level of moisture in a board is equal to the moisture in the surrounding air. The moisture content at which wood neither gains nor loses moisture when surrounded by air at a given relative humidity and temperature.
Edge (vertical) Grain