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Từ điển Oxford Learners Wordfinder Dictionary
quartz



noun
1. colorless glass made of almost pure silica (Freq. 1)
Syn:
quartz glass, vitreous silica, lechatelierite, crystal
Derivationally related forms:
crystallize (for: crystal), crystalize (for: crystal)
Hypernyms:
natural glass
Substance Meronyms:
silica, silicon oxide, silicon dioxide
2. a hard glossy mineral consisting of silicon dioxide in crystal form;
present in most rocks (especially sandstone and granite);
yellow sand is quartz with iron oxide impurities
Hypernyms:
mineral
Hyponyms:
quartz crystal, rock crystal, transparent quartz, cairngorm, smoky quartz,
amethyst, chalcedony, calcedony, citrine, rose quartz, sunstone,
aventurine, topaz, false topaz, common topaz
Substance Meronyms:
silicon, Si, atomic number 14, silica, silicon oxide, silicon dioxide

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