The technique, art, or process of making anaglyphic engravings and relief patterns, especially using mechanical or printing methods.
From anaglyptograph plus -y (forming abstract nouns), it names the practice and technique as a field.
Anaglyptography was cutting-edge manufacturing technology in the 1800s—imagine a machine that could automatically carve perfect relief patterns into materials. It combined art, engineering, and manufacturing in ways that fascinated the Victorian mind.
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