English Dictionary

QUARTZ

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 Dictionary entry overview: What does quartz mean? 

QUARTZ (noun)
  The noun QUARTZ has 2 senses:

1. colorless glass made of almost pure silicaplay

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 impuritiesplay

  Familiarity information: QUARTZ used as a noun is rare.


 Dictionary entry details 


QUARTZ (noun)


Sense 1

Meaning:

Colorless glass made of almost pure silica

Classified under:

Nouns denoting substances

Synonyms:

crystal; lechatelierite; quartz; quartz glass; vitreous silica

Hypernyms ("quartz" is a kind of...):

natural glass (magma of any composition that cooled very rapidly)

Meronyms (substance of "quartz"):

silica; silicon dioxide; silicon oxide (a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite)


Sense 2

Meaning:

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

Classified under:

Nouns denoting substances

Hypernyms ("quartz" is a kind of...):

mineral (solid homogeneous inorganic substances occurring in nature having a definite chemical composition)

Meronyms (substance of "quartz"):

atomic number 14; Si; silicon (a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors)

silica; silicon dioxide; silicon oxide (a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite)

Hyponyms (each of the following is a kind of "quartz"):

quartz crystal (a thin plate or small rod of quartz cut along certain lines and ground so that it can produce an electric signal at a constant frequency; used in crystal oscillators)

rock crystal; transparent quartz (a clear quartz used in making electronic and optical equipment)

cairngorm; smoky quartz (a smoky yellow or brown quartz)

amethyst (a transparent purple variety of quartz; used as a gemstone)

calcedony; chalcedony (a milky or greyish translucent to transparent quartz)

citrine (semiprecious yellow quartz resembling topaz)

rose quartz (a translucent rose-red variety of quartz used for ornaments)

aventurine; sunstone (a translucent quartz spangled with bits of mica or other minerals)

common topaz; false topaz; topaz (a yellow quartz)


 Context examples 


Silica is a rock-forming compound containing silicon and oxygen, commonly found on Earth as quartz.

(Curiosity Rover Inspects Unusual Bedrock, NASA)

However, the innovative dating techniques used in the study went a stage further, calculating how long the grains of quartz sediment that were dragged here by the early acequias have remained buried.

(Researchers demonstrate that Sierra Nevada is home to the oldest underground water recharge system in Europe, University of Granada)

One form of silica, quartz, is a major component of sand found on beaches along the U.S. coasts.

(Exploding Stars Make Key Ingredient in Sand, Glass, NASA)

Tiny filaments and tubes formed by bacteria that lived on iron were found encased in quartz layers in the Nuvvuagittuq Supracrustal Belt (NSB), Quebec, Canada.

(World's Oldest Fossils Unearthed, The Titi Tudorancea Bulletin)

Quartz (SiO2).

(Crystalline Silica Quartz, NLM, Medical Subject Headings)

Cassini's cosmic dust analyzer instrument repeatedly detected miniscule rock particles rich in silicon and the team concluded these particles must be grains of silica, which is found in sand and the mineral quartz on Earth.

(Spacecraft Data Suggest Saturn Moon's Ocean May Harbor Hydrothermal Activity, NASA)

Some of the quartz sand coming from the crater had planar deformation features indicative of a violent impact; this is conclusive evidence that the depression beneath the Hiawatha Glacier is a meteorite crater, said associate professor Nicolaj Larsen of Aarhus University in Denmark, one of the authors of the study..

(Unexpected Discovery Under Greenland Ice, NASA)



 Learn English with... Proverbs 
"Fool me once, shame on you. Fool me twice, shame on me." (English proverb)

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"As there is Easter, so there are meager times." (Corsican proverb)



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