Final answer:
MDF (Medium-density fiberboard) is a thin panel product with a smoother surface than standard plywood or OSB subflooring. It is made by combining wood fibers with resin and subjecting it to high pressure and heat.
Step-by-step explanation:
The thin panel product with a smoother surface than standard plywood or OSB subflooring is called MDF (Medium-density fiberboard).
MDF is made by combining wood fibers with resin and then subjecting it to high pressure and heat.
The result is a smooth, dense, and uniform panel that is ideal for applications like furniture, cabinets, and indoor flooring.