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1. (n.) sardonyx
an onyx composed of layers of sard and chalcedony of another color, usu. white: used as a gem and to make cameos.
Etymology: (1300–50; ME < L < Gk sardónyx; see sard , onyx)
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| Definition of 'sardonyx' |
Princeton's WordNet |
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1. (noun) sardonyx
an onyx characterized by parallel layers of sard and a different colored mineral
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| Definition of 'sardonyx' |
Webster Dictionary |
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1. (noun) sardonyx
a variety of onyx consisting of sard and white chalcedony in alternate layers
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