intaglio

In the first sense, intaglio refers to engraving with a chisel, inherited from goldsmiths. By extension, intaglio was then used to designate all processes of intaglio engraving on metal. Due to the importance of copper supports in intaglio, the term is confused with that of chalcography (copper engraving).

However, intaglio is also used on other metals, such as zinc or brass.