diaglyph

from WordNet (r) 3.0 (2006)

diaglyph
    n 1: glyptic art consisting of a sunken or depressed engraving
         or carving on a stone or gem (as opposed to cameo) [syn:
         {intaglio}, {diaglyph}]

from The Collaborative International Dictionary of English v.0.48

Diaglyph \Di"a*glyph\, n. [Gr. ? to engrave; dia` through + ? to
   carve.]
   An intaglio. --Mollett. Diaglyphic

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