Definitions
1.NounA decorative border around a picture used to inset and center the contents of a frame."The image is a perfect square of 8 cm (with white matte border the total dimensions are 14 cm tall by 11 cm wide)."
2.NounA background, often painted or created with computers"Matte painting is a tool that filmmakers can use to create a scene that is impossible to achieve with conventional cinematographic means."
3.NounThe molten metal sulfide phases typically formed during smelting of copper, nickel, and other base metals.
4.NounAn instrument for producing a dull, lustreless surface.
5.AdjectiveDull; not reflective of light."Flat or matte paint allows a deep color expression on the walls while also hiding flaws that may be inherent on the painted surface.; a matte lipstick"
6.VerbTo produce a dull, lustreless surface on (metal).