- an orange, red, or brown variety of chalcedony, used as a gemstone. Formula: SiO2
Also called: sardine
| 单词 | sard |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 sard (särd),USA pronunciation n.
Collins Concise English Dictionary © HarperCollins Publishers:: sard /sɑːd/, sardius /ˈsɑːdɪəs/ n
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