Synonyms for Intaglio (same or very similar meaning)
WordNet sense 1 (a printing process that uses an etched or engraved plate; the plate is smeared with ink and wiped clean, then the ink left in the recesses makes the print):
gravure, intaglio printingWordNet sense 2 (glyptic art consisting of a sunken or depressed engraving or carving on a stone or gem (as opposed to cameo)):
diaglyphFrom the ODE community, based on WordNetadd/edit