01 n. A variety of onyx consisting of sard and white chalcedony in alternate layers.
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1.
A variety of onyx consisting of sard and white chalcedony in alternate layers.(Min.)
Entry
1 sense
Webster, 1913
Sardonyx
· Sar·do·nyx
· IPA /sɑː(ɹ)ˈdɒnɪks/