Wood veneer is a thin layer or slice of wood, usually less than 3 millimeters thick, that is typically glued onto core panels (like particle board or MDF) to produce flat panels such as doors, tops, and panels for cabinets. It is made from various types of wood, allowing for a wide range of appearances and finishes. Veneer is often used in furniture and interior design because it provides the beauty of solid wood while being more cost-effective and environmentally friendly. By using wood veneer, manufacturers can create products that look luxurious without using large amounts of solid wood.