MDF, or medium density fiberboard, is a type of engineered wood that is made from wood fibers glued together under heat and pressure. MDF is denser and harder than particle board, but not as strong as plywood. It is often used for shelving, cabinets, and trim.
When cutting MDF, you will want to use a blade that is designed for cutting laminate or melamine. These blades have very fine teeth and are made of carbide, which will help to prevent chipping and tear-out. You will also want to use a blade with a high tooth count, which will help to produce a cleaner cut.