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Từ điển Oxford Learners Wordfinder Dictionary
chalcedony
a milky or greyish translucent to transparent quartz
• Syn:
calcedony
• Hypernyms:
quartz, transparent gem
• Hyponyms:
agate, bloodstone, heliotrope, carnelian, cornelian,
chrysoprase, onyx, plasma, sard, sardine, sardius
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