One of the mysteries of the English language finally explained.
1The sheen characteristic of (especially polished) metals and certain opaque minerals.
2A similarly shiny or iridescent appearance in certain organisms, especially insects.
3Ceramics a reflective or iridescent decorative finish produced by applying a thin film of metal to the surface of the glaze.
Late 18th century; earliest use found in Encyclopaedia Britannica.
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