| 单词 | sardonyx |
| 释义 | Word Frequency sardonyx(ˈsɑːdənɪks) noun a variety of chalcedony with alternating reddish-brown and white parallel bands, used as a gemstone. Formula: SiO2 Word origin C14: via Latin from Greek sardonux, perhaps from sardion sardine2 + onux nail |
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