Intaglio

(noun.) glyptic art consisting of a sunken or depressed engraving or carving on a stone or gem (as opposed to cameo).

整理:莱缪尔

• After the engraver has worked out the design in intaglio the die is put through the operation of hardening, after which, being cleaned and polished, it is called a matrix. 佚名. 神奇的知识之书.
• When the operation is reversed, and only the _darks_ are etched in _intaglio_, to be filled with ink, as in copper-plate engraving, it is called photo-gravure. Edward W. Byrn. 十九世纪发明进展.

埃尔伯特编辑