matte

definition: not reflecting light
example:
speech part: adjective
synonyms: flat
definition: the property of having little or no contrast
example:
speech part: noun
synonyms: mat
definition: a mixture of sulfides that forms when sulfide metal ores are smelted
example:
speech part: noun
synonyms:
definition: change texture so as to become matted and felt-like
example:
speech part: verb
synonyms: mat

How matte is being used?