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Từ điển WordNet v3.1 - WordNet Dictionary
crystal



noun
1. a solid formed by the solidification of a chemical and having a highly regular atomic structure (Freq. 4)
Derivationally related forms:
crystallize, crystalize
Hypernyms:
solid
Hyponyms:
snowflake, flake, ice crystal, snow mist, diamond dust,
poudrin, ice needle, frost snow, frost mist, gem, gemstone,
stone, twins, ice, water ice
2. a crystalline element used as a component in various electronic devices (Freq. 2)
Hypernyms:
component, constituent, element
Hyponyms:
piezoelectric crystal
Part Holonyms:
crystal counter, crystal detector, crystal microphone, crystal pickup
3. a rock formed by the solidification of a substance;
has regularly repeating internal structure;
external plane faces (Freq. 1)
Syn:
crystallization
Derivationally related forms:
crystallize (for: crystallization), crystalize
Hypernyms:
rock, stone
Hyponyms:
crystallite
4. colorless glass made of almost pure silica
Syn:
quartz glass, quartz, vitreous silica, lechatelierite
Derivationally related forms:
crystallize, crystalize
Hypernyms:
natural glass
Substance Meronyms:
silica, silicon oxide, silicon dioxide
5. glassware made of quartz
Hypernyms:
glassware, glasswork
6. a protective cover that protects the face of a watch
Syn:
watch crystal, watch glass
Hypernyms:
protective covering, protective cover, protection
Part Holonyms:
watch, ticker

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