Matt

1. (of a colour, paint, or surface) dull and flat; without a shine.

   prints are available on matt or glossy paper

   a matt black

1. a matt paint or finish.

   the varnishes are available in gloss, satin, and matt

2. a sheet of cardboard placed on the back of a picture, either as a mount or to form a border.

   try mounting prints against a deep matt or ground of the same background colour

1. give a matt appearance to (something).

   its bright fresh surface was soon matted with dust and insects

early 17th century (as a verb): from French mat .

abbreviation, symbol

Matthew (especially in biblical references).