"Black matte" refers to an object or surface that is completely black and does not reflect light. It has a non-shiny, flat finish, often textured, which makes it appear smooth and velvety. Full definition
I LOVE chalkboard paint and the great black matte finish it brings to a space. (kellyelko.com)
The front panel is finished with black matte plastic, the frame is minimal along the larger sides of a 6 - inch screen and notably wider above and under it. (bestadvisor.com)
It adds 20 - inch titanium wheels and black matte exterior trim. (cars.com)